Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — EMyo Girl Live Wallpaper - New Tab Theme [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override with uninstall+install URL hijack to gameograf.com — traffic monetization pattern.
• Uninstall and install URL hijack both confirmed; redirects users to developer site on every install/uninstall.
• Two innerHTML DOM-XSS sinks (popup.js, calendar.js) with no CSP present on MV3 extension.
• No developer name listed; low install count (51) limits blast radius but obscures accountability.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to newtab.html — replaces every new tab page.
• uninstall_url_hijack crx chrome.runtime.setUninstallURL to https://gameograf.com/?utm_source=extension&utm_medium=install
• install_url_hijack crx onInstalled opens https://gameograf.com/?utm_source=extension&utm_medium=install
• dom_sink_innerhtml_userctrl crx Two innerHTML sinks found (popup.js, calendar.js); no CSP to mitigate XSS risk.
• no_csp manifest content_security_policy is null; MV3 default CSP applies but no explicit hardening.
• verified_publisher store Developer verified; gameograf.com resolves, not throwaway, no bad-host hits.
• privacy_policy api Policy fetched, scoped to extension, documents collection, retention, and third-party sharing.
• search_permission_newtab manifest search permission + newtab override + install/uninstall hooks = traffic monetization cluster.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — EMyo Girl Live Wallpaper - New Tab Theme [adware] + malext.io malicious_extension_sentry; score 2.72 -> 5.22 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows querying default search provider; combined with newtab override raises monetization risk.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain; expected for a newtab theme fetching assets.
• chrome_url_overrides.newtab medium Replaces every new tab with developer-controlled page; high monetization leverage.

Pillar Scores

Bookkeeping