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Malicious package

ztargetpdfs1RubyGems

Advisory published Updated

ztargetpdfs1 is a confirmed malicious RubyGems package (MAL-2026-9809) 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 ztargetpdfs1 (RubyGems)

MAL-2026-9809
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall ztargetpdfs1

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

aac23bd93e93fee285e237511dcf7368328e9ec2a68aa6ddca0b8b4ff09fba70
cae69a5beb09814cfe91b00d563e5a5364e2eb00b753c75eac6c735549155cad

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for ztargetpdfs1 (version 0.0.1).

  2. If you installed it — respond

    Remove ztargetpdfs1 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 ztargetpdfs1 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. ztargetpdfs1 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-2026-04460RLUA-2026-10398

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks ztargetpdfs1-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

ztargetpdfs1 (RubyGems) malicious package — MAL-2026-9809 | O3 Security