VYPR

pypi · Malicious package advisory

Malware

pafer

MAL-2026-17756

Malicious code in pafer (PyPI)

Details


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## Source: kam193 (a74b7c5b356a87fe0262954cbedbcc432497ab25edaccbade0ce9ce04b16a8c9)
In this campaign, the main package (webreader) has an embeded pickle disguised as a config. A related dependency (pafer) contains code to load the pickle. During unpickling, malicious code embeded in the pickle file is automatically executed. It then establishes persistence via a PTH file and downloads the next stage payload. It finally acts like a RAT, allowing remote exfiltration and code execution.


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Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.


Campaign: 2026-10-webreader


Reasons (based on the campaign):


 - rat


 - Downloads and executes a remote malicious script.


 - obfuscation


 - The package contains code to execute remote commands (probably limited to a specific set) on the victim's machine.


 - abuses-pth


 - persistence


 - The malicious code is intentionally included in a dependency of the package


 - files-exfiltration

Compromised versions (2)

  • 0.9.7
  • 0.9.8

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.