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OpenAdvisories
Malicious MAL-2026-603

mcp-pdftool-plus

PyPI package · versions 0.1.3, 0.1.4, 0.1.5

Reported Jan 29, 2026 · Updated Jan 29, 2026

If this package is installed

Remove it, treat the machine (or CI runner) as compromised, and rotate every secret, token and key it could access — from a different, clean machine.

Details

Source: kam193 (2e92dea8be02288f271dacad2cd77f1bdd54596da1691cb738c4a7b7b4f77d21)
When using the library, the hidden code starts a reverse shell

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

Campaign: 2026-01-mcp-pdftool-plus

Reasons (based on the campaign):

- The package contains code to create a reverse shell, allowing an attacker to execute any commands on the victim's machine.

- action-hidden-in-lib-usage

Indicators of compromise

Shown defanged and not clickable. Search any indicator to find other packages using it.

IP addresses