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Malicious package

zwpdfg10266bRubyGems

Advisory published Updated

zwpdfg10266b is a confirmed malicious RubyGems package (MAL-2026-9895) that executes malicious code on install (malicious version 0.0.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in zwpdfg10266b (RubyGems)

MAL-2026-9895
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall zwpdfg10266b

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

04f30354de1f76684d99e097f75d4145f6e116362a7c41a2d620d0b97fc46b8f
1eed7d26d7aacdc11a0a1ece93e3e5f3c3924530372d4e6b28ab900aac8707b2

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for zwpdfg10266b (version 0.0.1).

  2. If you installed it — respond

    Remove zwpdfg10266b 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 zwpdfg10266b 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. zwpdfg10266b on RubyGems has been identified as a malicious package (version 0.0.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-04546RLUA-2026-10484

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks zwpdfg10266b-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

zwpdfg10266b (RubyGems) malicious package — MAL-2026-9895 | O3 Security