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Malicious package

node-calculator-dfd9npm

Advisory published Updated

node-calculator-dfd9 is a confirmed malicious npm package (MAL-2025-192841) that executes malicious code on install (malicious versions 3.0.0, 3.0.1, 3.0.2…). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in node-calculator-dfd9 (npm)

MAL-2025-192841
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall node-calculator-dfd9

What this malware does

The package node-calculator-dfd9 was found to contain malicious code.

Malicious versions

6 flagged
3.0.03.0.13.0.23.0.33.0.43.0.5

Indicators of compromise (SHA-256)

e6adb4f0ca938518a832c3913a27dc5b587ff6260d47eb320cb0cfb44054b4c5
70d872e4e5c25f4b331308e1eea846fe1de76eea95fb78f8bb139ce59f1dd61b

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for node-calculator-dfd9 (6 malicious versions).

  2. If you installed it — respond

    Remove node-calculator-dfd9 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 node-calculator-dfd9 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. node-calculator-dfd9 on npm has been identified as a malicious package (versions 3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.0.4, 3.0.5 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-06427

Credits

  • Amazon Inspector · finder
  • ReversingLabs · finder

Detect & block this

O3 blocks node-calculator-dfd9-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

node-calculator-dfd9 (npm) malicious package — MAL-2025-192841 | O3 Security