{
  "timestamp": "2025-02-05T23:44:44.306791",
  "model": "deepseek/deepseek-r1-distill-llama-70b",
  "request": {
    "messages": [
      {
        "role": "system",
        "content": "You are a security advisor providing end-user guidance on data security and protection.\n            Focus on practical, easy-to-follow security recommendations."
      },
      {
        "role": "user",
        "content": "\n            Provide clear security guidance based on:\n            \n            Content to reference:\n            Search Free Trial Get Demo Malicious Google Chrome extension spreads nude celebrity pdfs to Facebook December 8, 2016 A researcher at Cyren has found that a malicious Google Chrome extension is spreading nude celebrity PDFs to Facebook groups. A user is uploading a PDF document to groups with the name  Jessice_Alba_Leaked-sextapeVide_oSun_Dec_4_2016_22_99.mp4.pdf  Opening the PDF reveals a nude picture with a Play button in the middle. Clicking on the picture opens up a Web browser for viewing the video. If the browser is IE, FireFox, or Safari then the user will be taken to an aggressive advertising webpage nudity, fake lottery. However, if the user is using Google Chrome, the link opened is hxxpsrb-xxxxxx.xxxgxxxxo.php and shows a phony YouTube site. Clicking the play button brings up a pop-up window inviting the user to install a Google Chrome extension. After installing that extension, the browser opens up a Facebook.com login page. The extension is able to read the users friend list, Facebook groups, plus all personal information and upload the PDF to groups, posts, and to friends in private chat. A JSON config file is downloaded from hxxpxxxxxx.comjquery.php?random string that has URL to another script as shown in the JSON format. The Google Chrome extension has a JavaScript file called background.js that acts as the initial downloader for that script, ba.php . hxxpsxxxxxx.xxx2017ba.php?random value snip  mundet 1, d , f ba.php?  snip The random value is computed using the following code snip Math.floorDate.now  1000 snip The downloaded chrome extension script, contains several chrome event handlers, which includes the following chrome.webRequest.onBeforeRequest . This handler is used to observe and analyze traffic and to intercept, block, or modify requests in-flight. This handler contains a long list of AVs and AntiSpam domains shown below which this malicious chrome extension blocks or prevents from being opened chrome.tabs.onUpdated  This handler is used to monitor opened tabs and also intercepts or blocks specific tabs from being opened. It also blocks the chrome extensions and chrome devtools tabs from being opened, preventing the user from uninstalling the malicious chrome extension snip iftab.url.indexOfchromeextensions  -1  tab.url.indexOfchromechromeextensions  -1  tab.url.indexOfchrome-devtools  -1  chrome.tabs.removetabId iftab.url  chromeextensions  tab.url  chromechromeextensions  changeInfo.status  loading chrome.tabs.removetabId snip Prevents the user from opening herokuapp.com Force opened tabs with specific attributes to redirect automatically to vk.comaway.php?tofacebook.com Opened tabs with the string id1g345hh, apparently this tab refers to the fake youtube vide page tab Opened tabs with URLs containing the string allactivity Download and execute another malicious chrome extension script from hxxpsxxxxx.com2017main.php?random string The ba.php script file has hardcoded URLs of many anti-virus and anti-spam companies and blocks their webpages if the infected user tries to access them. The third chrome extension script main.php contains the code which makes this malicious chrome extension propagate through facebook. This behavior alone makes this malicious chrome extension a new breed of web-based Worms. The PDF that is uploaded to Facebook is generated by selecting the name of a celebrity randomly from the script file and combining this with random characters. For example this link would generate a PDF with a picture of Kim Kardashian with a play button hxxpsxxxxxxxcreatePDF?xxxxKim_Kardashianidctjn8v57n. If the PDF is accessed from a mobile device the user will get this message if there is no PDF viewer on the mobile device found it on youtube if you are on mobile you need to install Google PDF viewer from play store to watch this video. OMG its really you. The message is translated into 25 different languages depending on the users locale. Opening the PDF on a mobile device and clicking on the play button leads the user to a mobile version of the spam advertising site. After opening the PDF on the mobile device the play button scrolls through multiple links and ends up opening one of them. Spinning the wheel then opens up more fake spam windows. So to summarize, this advertising campaign is able to create a sort of botnet to spread via a combination of nude celebrity pictures, a chrome extension, and Facebook posts  which all ultimately lead to an aggressive spamadvertising page. Facebook runs on all kinds of devices, although this malware campaign targets the Chrome web browser platform, it is not impossible for the malware writers to find ways to propagate through other browsers, as all the other browsers also have their own browser pluginsextensions. The fact that this malicious Chrome extension was hosted in the Google Chrome Extension Store, tricks users into believing that the Chrome extension came from a trusted sourcepublisher and are probably safe to install. Google has removed the extension from the webstore. Cyren detects the Chrome extension scripts as, JSVekikrom.A!Eldorado for ba.ph and JSVekikrom.A1!Eldorado for main.php and background.js as JSAgent.XL. Removing the extension from Chrome To remove this extension the infected user would have to delete the Regestry key from the Registry Editor and also the folder in AppData. This is the path to the Registry Editor HKEY_LOCAL_MACHINESoftwareGoogleChromeExtension This is the path to the extension folder CUsersUSERAppDataLocalGoogleChromeUser DataDefaultExtensions Information about uninstalling Chrome extension manually can be found here ! Want to learn more about cloud-based web security? Contact us here ! Try it for Free Instant Data Classification Cyren URL Category Chacker Prev Why your email isnt as secure as you think it is On Demand Webinar  Botnets the Clone Armies of Cybercrime Next Company Partners Resources Investor Relations Products Freeware Demo Solutions Contact Us Privacy Management Service by Data443\n            \n            Your guidance should include:\n            1. Easy-to-follow security best practices\n            2. Data protection recommendations\n            3. Safe usage guidelines\n            4. Common security risks and prevention\n            5. Privacy protection measures\n            6. When to seek additional security support\n            "
      }
    ],
    "model": "deepseek/deepseek-r1-distill-llama-70b"
  },
  "response": {
    "content": "### Security Guidance: Protecting Yourself from Malicious Chrome Extensions and Similar Threats\n\n#### **1. Security Best Practices to Avoid Such Threats**\n- **Be cautious with extensions**: Only install Chrome extensions from the official Chrome Web Store and ensure they are from trusted publishers. Read reviews and check the number of users before installing.\n- **Avoid suspicious links and files**: Do not open unfamiliar PDFs, links, or files, especially those promising nude or sensitive celebrity content. These are often lures for malware.\n- **Keep your browser updated**: Ensure Google Chrome and other browsers are always updated to the latest version to protect against exploit vulnerabilities.\n- **Use strong antivirus software**: Install and regularly update antivirus software to detect and block malicious extensions and scripts.\n- **Enable extension verification**: Review all installed extensions periodically and remove any that you do not recognize or use.\n\n---\n\n#### **2. Data Protection Recommendations**\n- **Back up your data**: Regularly back up personal files and data to an external drive or cloud storage service to protect against loss due to malware.\n- **Monitor your online accounts**: Check your Facebook, Chrome, and other accounts for unauthorized activity. If you notice posts or messages you did not send, investigate immediately.\n- **Use a password manager**: Avoid reusing passwords across multiple accounts. Use a password manager to generate and store unique, complex passwords.\n- **Enable two-factor authentication (2FA)**: Protect your accounts with 2FA, especially for critical services like Facebook and Google.\n\n---\n\n#### **3. Safe Usage Guidelines**\n- **Avoid oversharing on social media**: Malware often propagates by abusing trust within social networks. Avoid posting sensitive personal information or clicking on suspicious links shared by friends.\n- **Disable unnecessary permissions**: When installing extensions or apps, only grant the permissions necessary for their functionality.\n- **Avoid clicking on pop-ups**: If a website or PDF prompts you to install an extension, close the tab immediately. Do not interact with suspicious pop-ups.\n\n---\n\n#### **4. Common Security Risks and Prevention**\n- **Phishing and social engineering**: Be wary of emotional appeals (e.g., celebrity scandals) designed to trick you into installing malicious extensions or sharing sensitive information.\n- **Malicious extensions**: Extensions can steal data, monitor browsing, or take control of your accounts. Only install extensions you trust.\n- **Unauthorized access**: Malware like this Chrome extension can access your friend lists, groups, and personal data. Limit the permissions you grant to third-party apps.\n  \n  **Prevention**:\n  - Use a reputable ad blocker to reduce exposure to malicious ads.\n  - Disable extensions when not in use.\n  - Monitor your browser for unusual behavior (e.g., unauthorized tabs opening or unexpected pop-ups).\n\n---\n\n#### **5. Privacy Protection Measures**\n- **Review Facebook settings**: Limit who can see your posts, friends list, and personal information. Enable \"Privacy Checkup\" on Facebook to review your settings.\n- **Block unauthorized apps**: Regularly review the apps and websites connected to your Facebook account and revoke access for any unfamiliar or suspicious ones.\n- **Use a VPN**: When accessing public Wi-Fi, use a virtual private network (VPN) to encrypt your traffic and protect your data.\n\n---\n\n#### **6. When to Seek Additional Security Support**\n- If you suspect your device or account has been compromised, immediately:\n  - Disconnect from the internet.\n  - Contact your antivirus provider for assistance.\n  - Change your passwords for all affected accounts.\n  - Report the incident to Facebook or Google support if your account was misused.\n\nSeek professional help if:\n- You are unsure how to remove a malicious extension.\n- You notice persistent unusual activity on your accounts or devices.\n- Your antivirus software detects multiple threats.\n\n---\n\n### Summary of Key Takeaways:\n- Avoid installing unknown extensions and clicking on suspicious links.\n- Keep your devices, browsers, and software updated.\n- Use antivirus software and enable two-factor authentication.\n- Monitor your accounts and back up your data regularly.\n- Be cautious of emotional appeals in content (e.g., celebrity scandals) designed to trick you.\n\nBy following these guidelines, you can significantly reduce your risk of falling victim to malicious Chrome extensions and similar threats. Stay vigilant and proactive in protecting your digital presence!",
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    "model": "deepseek/deepseek-r1-distill-llama-70b"
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}