Which versions of swpdf131119fos are malicious?

The following RubyGems versions of swpdf131119fos are flagged malicious: 0.0.1. Treat any of these as compromised.

How do I remediate swpdf131119fos if I installed it?

Remove swpdf131119fos 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.

I already installed swpdf131119fos — how do I know if it already compromised me?

If swpdf131119fos 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.

Is swpdf131119fos part of a known attack campaign?

Yes — swpdf131119fos is associated with the RLMA-2026-03609, RLUA-2026-09522 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find swpdf131119fos across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for swpdf131119fos (version 0.0.1).

Malicious package

swpdf131119fosRubyGems

Advisory published Jul 7, 2026Updated Sep 24, 2026

swpdf131119fos is a confirmed malicious RubyGems package (MAL-2026-8958) 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 swpdf131119fos (RubyGems)

MAL-2026-8958

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

gem uninstall swpdf131119fos

Malicious versions

1 flagged

0.0.1

Indicators of compromise (SHA-256)

f83f5a812ae50d0726b8e6e7a1702b618c6744579e1a786e05e8143eccdf8120

32edd9c433c6b1437a67b82c94af9957f841b93fd6e314c3a62a246fed059054

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for swpdf131119fos (version 0.0.1).
If you installed it — respond
Remove swpdf131119fos 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.
Did it already run?
If swpdf131119fos 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. swpdf131119fos 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-2026-03609RLUA-2026-09522

References

github.com

Credits

ReversingLabs · finder

Detect & block this

O3 blocks swpdf131119fos-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.

Malware detection Runtime egress monitoring

Explore

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