Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — 67 Meme Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override replaces every new-tab page; prime surface for search/ad monetization.
• Both install and uninstall URL hijacks redirect to developer domain with UTM tracking.
• Privacy policy URL returns fetch error — no policy effectively evaluated; scored as unavailable.
• No CSP defined (MV3 default helps but csp_present==false); innerHTML sink in calendar.js raises XSS risk.

Evidence

• newtab_override manifest chrome_url_overrides.newtab = newtab.html — replaces every new-tab page.
• uninstall_url_hijack crx setUninstallURL to https://gameograf.com/?p=33358?utm_source=extension&utm_medium=uninstall
• install_url_hijack crx onInstalled opens https://gameograf.com/?p=33358?utm_source=extension&utm_medium=install
• privacy_policy_fetch_error api privacy_policy_classification.fetched==false reason=fetch_error:HTTPError; treated as no policy.
• dom_xss_sink crx innerHTML assigned from variable in js/calendar.js with no CSP; DOM-XSS risk.
• no_developer_name store developer_name is empty; no 'Offered by' identity disclosed.
• verified_publisher store verified_publisher==true; applies -3.0 reputation discount (floor 2.0 enforced).
• newtab_search_engine_count api search_engine_count=1 (google.com only); no multi-search-engine anomaly triggered.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — 67 Meme Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 5.14 -> 7.64 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Can manipulate or read search provider; medium risk on its own.
• alarms low Schedules periodic tasks; low standalone risk.
• storage low Local key-value storage only.
• chrome_url_overrides.newtab high Replaces new-tab page; high-visibility surface for monetization/search hijack.
• host_permissions: https://api.gameograf.com/* medium Scoped to own API domain; data exfiltration channel to developer-controlled host.

Pillar Scores

Bookkeeping