Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Christmas Live Wallpaper Gameograf [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override with uninstall URL hijack and install URL hijack — monetization shell pattern.
• No CSP (csp_present=false) combined with innerHTML DOM-XSS sinks elevates code quality risk.
• No developer name listed; verified publisher but blank 'Offered by' field.
• NewTab + search permission combo: potential search-provider monetization surface.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to newtab.html — replaces every new tab page.
• uninstall_url_hijack crx setUninstallURL targets https://gameograf.com with UTM params — monetization redirect.
• install_url_hijack crx onInstalled opens https://gameograf.com with UTM install params — monetization redirect.
• no_csp manifest content_security_policy is null; MV3 default applies but no explicit CSP hardening.
• dom_xss_sink crx innerHTML assigned from variable in popup.js and calendar.js with no CSP — DOM-XSS risk.
• verified_publisher store verified_publisher=true for gameograf.com; domain resolves, not throwaway.
• privacy_policy api Policy fetched, scoped to extension, discloses data collection, retention, and third-party sharing.
• no_developer_name store developer_name field is empty string despite verified publisher status.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Christmas Live Wallpaper Gameograf [adware] + malext.io malicious_extension_sentry; score 4.36 -> 6.86 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows reading/modifying search provider; medium risk for NewTab extension.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain; low risk.
• chrome_url_overrides.newtab medium Replaces new-tab page — core NewTab monetization surface.

Pillar Scores

Bookkeeping