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Malicious package

swpdf1311191RubyGems

Advisory published Updated

swpdf1311191 is a confirmed malicious RubyGems package (MAL-2026-8957) 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 swpdf1311191 (RubyGems)

MAL-2026-8957
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall swpdf1311191

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

0a5b5a3fe91001b9bdf73210554a35f9e2771498cbee1a915de131cee7fe8a17
6c60428834b31d43316d1f94d42c275bb5ab572ed01c86b2b8a7bd97ab48434d

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for swpdf1311191 (version 0.0.1).

  2. If you installed it — respond

    Remove swpdf1311191 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 swpdf1311191 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. swpdf1311191 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-2026-03608RLUA-2026-09521

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks swpdf1311191-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

swpdf1311191 (RubyGems) malicious package — MAL-2026-8957 | O3 Security