🛡️ MAL-2026-12187 — pfp-forms-sme-registration-ooo

Malicious code in pfp-forms-sme-registration-ooo (npm)

Source: amazon-inspector

On require of pfp-forms-sme-registration-ooo, index.js loads _polyfill.js which selects a platform-specific asset path and fetches a native binary over HTTPS from Cloudflare Workers hosts (oob-worker.cf103-070.workers.dev) and *.dl.well1.site subdomains (tin, tina, ldr, win). The destination hostnames are reconstructed at runtime by joining split string arrays to evade static inspection, and a DNS-TXT chunked fallback channel is present. The fetched bytes are written to disguised paths (/var/tmp/.cache_<hex> on POSIX, %TEMP%/dotnet_diag_<hex>.exe on Windows), made executable via fs.chmodSync(outPath, 0o755), and spawned detached through /bin/sh -c or cmd.exe /c start /b. The binary is unpinned and unverified (no hash or signature check), the package's advertised purpose does not require a native helper, and the opt-out relies on generic environment variable names. Installing or importing this package results in arbitrary attacker-controlled code executing on the installer's host.

Source: ghsa-malware

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.