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Malicious package

pfp-forms-independent-sme-glossary-anchornpm

Advisory published Updated

pfp-forms-independent-sme-glossary-anchor is a confirmed malicious npm package (MAL-2026-12412) that executes malicious code on install (malicious version 20.4.4). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in pfp-forms-independent-sme-glossary-anchor (npm)

MAL-2026-12412
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall pfp-forms-independent-sme-glossary-anchor

What this malware does

On require of the package, index.js loads compat.js which reconstructs mirror hostnames via string-splitting joins (oob-worker.cf102-baf.workers.dev, cf99-9b3.workers.dev, cf101-adf.workers.dev, cf100-416.workers.dev) with a DNS TXT-record fallback under *.dl.well1.site, fetches a platform-specific binary via https.get, writes it to a disguised path under /var/tmp or %TEMP% (e.g..cache<hex> or dotnet_diag_<hex>.exe), chmods 0755, and spawns it detached via /bin/sh -c or cmd /c start. A second equivalent dropper is bundled in lib/telemetry.js (Buffer.from(chunks,'base64'), chmodSync 0o755, cp.spawn('/bin/sh',['-c',filePath+' &'])) as an alternate staging path. Hostname reconstruction via array-join fragments and library-load-time execution place this outside legitimate native-binary install patterns.

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.

Malicious versions

1 flagged
20.4.4

Indicators of compromise (SHA-256)

c96f28993eb59bb78a357534cf64aac001732fc4951ccb33f8eca2a3ce615f3c
37a532a2fda12c5afe10a0285c3824d914a12c047d3b70ee51d081f987b298ff

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for pfp-forms-independent-sme-glossary-anchor (version 20.4.4).

  2. If you installed it — respond

    Remove pfp-forms-independent-sme-glossary-anchor from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

  3. Did it already run?

    If pfp-forms-independent-sme-glossary-anchor was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. pfp-forms-independent-sme-glossary-anchor on npm has been identified as a malicious package (version 20.4.4 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-014717GHSA-fg28-xw73-5q8v

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks pfp-forms-independent-sme-glossary-anchor-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Explore

pfp-forms-independent-sme-glossary-anchor (npm) malicious package — MAL-2026-12412 | O3 Security