Avira Browser SafetySecurity Analysis

Extension has cookie access and sends data to external servers — potential session token theft.

Extension intercepts network traffic and sends data externally — potential man-in-the-middle behavior.

Extension manages other extensions and executes dynamic code — behavior consistent with malware dropper.

Uses eval() to execute dynamic code, a common technique for obfuscation and code injection.

Creates functions from strings, similar to eval(), often used to hide malicious code.

Dynamically creates script elements, potentially loading external malicious code.

Dynamically sets a script's src attribute to load external code at runtime.

Accesses browser cookies programmatically, could be used to steal session tokens.

Injects and executes scripts in web pages programmatically.

Uses data URIs to execute code, bypassing content security policies.

Manages other extensions, could disable security tools or install malware.

Creates a function from a string (new Function()), similar to eval().

Extension tracks open tabs and communicates with external servers — potential browsing surveillance.

Decodes base64 data, commonly used to hide malicious payloads.

Uses XMLHttpRequest to make network calls.

Dynamically creates iframe elements, which can be used to load external content or hide malicious UI.

Modifies window.location to redirect the user, potentially to phishing or malicious pages.

Sends messages via Chrome runtime, could communicate with external services.

JavaScript file could not be parsed. May contain obfuscated or minified code.

Line exceeds 5000 characters (entropy: 5.161285038530703)

Template injection leading to XSS

Allowing the http: scheme enables loading scripts over insecure connections, vulnerable to MITM attacks.

Web-accessible resources use <all_urls> or wildcard patterns, exposing resources to every website.

Content script matches <all_urls>, executing on every website the user visits.

Encodes data to base64, may be used for data exfiltration.

Reads or writes to localStorage, which may contain sensitive site data.

Sets innerHTML directly, which can lead to XSS if used with untrusted data.

String with entropy 6.02 bits — may be encoded/encrypted data

object-src is not set to 'none'. Plugins like Flash can be embedded, which may allow code execution.

adguard/adguard-api.js

js/content/common.js

js/content/jquery.js