Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Seoul street night live wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override hijacks every new tab for a wallpaper extension with monetization URLs on install/uninstall.
• Uninstall URL hijack and install URL hijack both point to gameograf.com with UTM tracking.
• NewTab with search permission and 12 Google domain JS contacts suggests search-monetization shell.
• dom_sink_innerhtml_userctrl in popup.js and calendar.js with no CSP raises DOM-XSS risk.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to newtab.html — full new-tab replacement by a wallpaper extension.
• uninstall_url_hijack manifest setUninstallURL targets gameograf.com with UTM params on uninstall.
• install_url_hijack manifest onInstalled opens gameograf.com with UTM tracking params.
• search_permission_newtab manifest search permission + newtab override + 12 Google domains in JS suggest search monetization shell.
• dom_xss_sink crx innerHTML assigned from variable in popup.js and calendar.js; no CSP to mitigate.
• no_csp manifest csp_present == false on MV3; no mitigation for innerHTML sinks.
• verified_publisher store Verified publisher gameograf.com resolves and is not throwaway; partial reputation credit.
• privacy_policy api Policy fetched, scoped to extension, discloses collection, retention, and third-party sharing.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Seoul street night live wallpaper [adware] + malext.io malicious_extension_sentry; score 4.14 -> 6.64 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows querying browser search engine; paired with NewTab override raises monetization concern.
• host_permissions: https://api.gameograf.com/* low Scoped to dev-controlled API domain only; narrow host access.
• chrome_url_overrides.newtab high Replaces every new tab with developer-controlled page; high reach/monetization surface.

Pillar Scores

Bookkeeping