Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Mercedes AMG GT Live Wallpaper New Tab [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override replaces every new tab session — persistent high-reach insertion point for a wallpaper extension.
• Uninstall and install URL hijacks route users to gameograf.com with UTM tracking on both events.
• No content_security_policy; MV3 default applies but DOM-XSS innerHTML sink in popup.js is unmitigated.
• No developer name listed; verified publisher but missing 'Offered by' identity reduces accountability.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to newtab.html — replaces all new tabs for wallpaper feature.
• uninstall_url_hijack crx setUninstallURL targets https://gameograf.com/?utm_source=gameograf&utm_medium=link&utm_campaign=bg&utm_content=uninstall
• install_url_hijack crx onInstalled opens https://gameograf.com/?utm_source=install&utm_medium=link&utm_campaign=bg&utm_content=install
• no_csp manifest content_security_policy is null; no explicit CSP defined in MV3 manifest.
• dom_xss_sink crx js/popup.js: popupContainer.innerHTML assigned from variable — unmitigated DOM-XSS sink.
• verified_publisher store Verified publisher badge present; domain gameograf.com resolves and is not throwaway.
• privacy_policy_complete api Policy fetched; scope_extension, data_collection, retention, third_party_sharing all true.
• stale_maintenance store Last updated June 2025; 14 months since update — in 6-24 month stale band.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Mercedes AMG GT Live Wallpaper New Tab [adware] + malext.io malicious_extension_sentry; score 4.18 -> 6.68 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows reading/modifying search provider; expected for NewTab but extends reach.
• host_permissions: https://api.gameograf.com/* low Scoped to dev-controlled API domain; limits exfil surface.
• chrome_url_overrides.newtab medium Replaces every new tab; persistent high-reach insertion point.

Pillar Scores

Bookkeeping