{"id":"MAL-2026-12630","summary":"Malicious code in claims-page-maker-types (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (b337b617f3692fffb0d54a13924ae322ed7e2976c00a61f16c16877aa8c086e5)\nOn require() of claims-page-maker-types, index.js loads _adapter.js which runs at module load. _adapter.js selects a platform-specific asset, fetches an opaque binary over HTTPS from one of four hardcoded Cloudflare workers.dev hosts (oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev) with a DNS TXT fallback under wel1.ru (sdk.dl.wel1.ru), writes the payload to a disguised temp path (.cache_\u003chex\u003e on Unix, dotnet_diag_\u003chex\u003e.exe on Windows), chmods it 0755, and spawns it detached via /bin/sh -c or cmd. Host strings are assembled by Array.join from split fragments to evade plain-text scanners, filenames mimic system diagnostics, and a stamp file (analytics_state) throttles re-execution while comments frame the behavior as 'telemetry'. No pinning, no signature verification, and the destination hosts are not the package's registry or publisher infrastructure.\n","modified":"2026-08-05T14:35:57.586113828Z","published":"2026-08-05T14:03:08Z","database_specific":{"malicious-packages-origins":[{"source":"amazon-inspector","versions":["35.5.1"],"id":"IN-MAL-2026-015144","import_time":"2026-08-05T14:20:06.608700751Z","modified_time":"2026-08-05T14:03:08Z","sha256":"b337b617f3692fffb0d54a13924ae322ed7e2976c00a61f16c16877aa8c086e5"}]},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/claims-page-maker-types/v/35.5.1"}],"affected":[{"package":{"name":"claims-page-maker-types","ecosystem":"npm","purl":"pkg:npm/claims-page-maker-types"},"versions":["35.5.1"],"database_specific":{"cwes":[{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"}],"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/claims-page-maker-types/MAL-2026-12630.json","indicators":{"evidence_files":[{"path":"_adapter.js","sha256":"2a58813a75a60eb63ad0c48dba572be38499d857548f25c5beb32054727472f9","tlsh":"d5a1879a12a570198bb0ebe4c61b8415f66bf6633780c5d4f79c55884fb312483b2efc"}],"package_integrity":[{"filename":"claims-page-maker-types-35.5.1.tgz","hashes":{"sha512_sri":"sha512-RybrDQYcnPHdMMoDqbP2AKLJFVINq6guNc+YRlrL6wxF6yiXGCgIqunbgy/aF+FXrGYzWPWkuscJ721pldHtcA==","sha1":"6b645fc36baabf784995ccc259aede2856c5e865"}}]}}}],"schema_version":"1.8.0","credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"}]}