Which versions of ztargetpdfb1 are malicious?

The following RubyGems versions of ztargetpdfb1 are flagged malicious: 0.0.1. Treat any of these as compromised.

How do I remediate ztargetpdfb1 if I installed it?

Remove ztargetpdfb1 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 ztargetpdfb1 — how do I know if it already compromised me?

If ztargetpdfb1 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 ztargetpdfb1 part of a known attack campaign?

Yes — ztargetpdfb1 is associated with the RLMA-2026-04458, RLUA-2026-10396 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 ztargetpdfb1 across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for ztargetpdfb1 (version 0.0.1).

Malicious package

ztargetpdfb1RubyGems

Advisory published Jul 7, 2026Updated Sep 24, 2026

ztargetpdfb1 is a confirmed malicious RubyGems package (MAL-2026-9807) 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 ztargetpdfb1 (RubyGems)

MAL-2026-9807

Immediate action

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

gem uninstall ztargetpdfb1

Malicious versions

1 flagged

0.0.1

Indicators of compromise (SHA-256)

454c0a9843960944c82860811d1de228418880921556cd2a0cb6358c70c0f08b

3ba74b989b591cf980609471876c0d2e3fc227d2b3184dce0a95250408a69bb3

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for ztargetpdfb1 (version 0.0.1).
If you installed it — respond
Remove ztargetpdfb1 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 ztargetpdfb1 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. ztargetpdfb1 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-2026-04458RLUA-2026-10396

References

github.com

Credits

ReversingLabs · finder

Detect & block this

O3 blocks ztargetpdfb1-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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