Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Goldarm Gang Brawl Stars Gameograf [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Privacy policy is Google's own policy — zero scope to this extension; data collection and 3rd-party sharing admitted without extension-specific disclosure.
• Uninstall URL hijack to gameograf.com and install URL hijack fire on every install/uninstall — classic monetization-shell pattern.
• NewTab override replaces every new tab, giving permanent reach over user browsing surface.
• Two innerHTML DOM-XSS sinks present with no CSP; no obfuscation but no protection against injected content.

Evidence

• uninstall_url_hijack manifest chrome.runtime.setUninstallURL → https://gameograf.com/?utm_source=gameograf&utm_medium=link&utm_campaign=bg&utm_content=uninstall
• install_url_hijack manifest onInstalled opens https://gameograf.com/?utm_source=install&utm_medium=link&utm_campaign=bg&utm_content=install
• newtab_override manifest chrome_url_overrides.newtab = newtab.html — replaces every new tab page.
• privacy_policy_generic store Policy URL is Google's account privacy page; scope_extension=false, data_collection=true, third_party_sharing=true.
• dom_xss_sink crx innerHTML user-controlled in js/popup.js and js/calendar.js; no CSP in MV3 manifest.
• no_developer_name store developer_name is empty string; manifest name uses MSG token — minimal attribution.
• new_tab_monetization_pattern manifest search override + newtab override + install/uninstall URL tracking = monetization shell fingerprint.
• verified_publisher store verified_publisher=true but no featured badge; partial reputation credit applied.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Goldarm Gang Brawl Stars Gameograf [adware] + malext.io malicious_extension_sentry; score 5.34 -> 7.84 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows manipulation of the browser search provider; paired with newtab override elevates risk.
• host_permissions: https://api.gameograf.com/* low Scoped to dev's own API domain; limited blast radius.
• chrome_url_overrides.newtab medium Replaces every new tab with extension page; high-reach monetization surface.

Pillar Scores

Bookkeeping