Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Anime Girl Halloween Live Wallpaper New Tab [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override on every new tab combined with uninstall/install URL hijacks — classic monetization shell pattern.
• No developer name listed; anonymous publisher reduces accountability.
• Uninstall and install URL hijacks to third-party gameograf.com — webstore monetization signal.
• DOM-XSS sink (innerHTML from variable) in calendar.js with no CSP — exploitable if data sourced externally.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to newtab.html — replaces every new tab.
• uninstall_url_hijack crx setUninstallURL to https://gameograf.com/...?utm_medium=uninstall — 3rd-party redirect.
• install_url_hijack crx onInstalled opens https://gameograf.com/...?utm_medium=install — monetization pattern.
• no_developer_name store developer_name is empty; reduces accountability for publisher.
• no_csp manifest content_security_policy is null; MV3 default applies but no explicit hardening.
• dom_xss_sink crx innerHTML assigned from variable in js/calendar.js with no CSP — DOM-XSS risk.
• privacy_third_party_sharing store Privacy policy admits third-party data sharing; scope_extension=true, retention=true.
• low_installs_newtab store Only 330 installs for a NewTab extension; limited blast radius but pattern remains.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Anime Girl Halloween Live Wallpaper New Tab [adware] + malext.io malicious_extension_sentry; score 2.86 -> 5.36 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows reading/manipulating search queries; medium risk for a NewTab override.
• alarms low Scheduling API; low standalone risk.
• storage low Local data persistence only; low risk.
• chrome_url_overrides.newtab medium Replaces every new tab with extension page; high-reach monetization vector.
• host_permissions: https://api.gameograf.com/* low Scoped to dev-controlled domain; narrow host access.

Pillar Scores

Bookkeeping