# MAL-2026-6541: Malicious code in pdf-converter-pro (PyPI)


- **Type:** Malicious package
- **Package:** `pdf-converter-pro` (PyPI)
- **Published:** 26 Jun 2026

## What is MAL-2026-6541?

MAL-2026-6541 is a malicious package in pdf-converter-pro, published on 26 Jun 2026. 

### Official description

Package is advertised as a PDF converter but contains no PDF generation code. Its sole public method TXTtoPDFConverter.create_pdf(txt_path, pdf_path) is gated on the literal arguments 'file.txt' and 'file.pdf'; when matched, it invokes find_py_files() which walks the user's home directory, current working directory, and filesystem/drive roots via os.walk to collect up to 50.py source files, then _send_py_file() POSTs each file's bytes to https://api.telegram.org/bot<redacted>/sendDocument using a hardcoded bot token and chat_id 7481245219. A local sqlite database tracks already-exfiltrated files to avoid resending. Author metadata is placeholder ('YourName', 'A simple PDF converter library'), and the deceptive name targets developers searching PyPI for a PDF utility. Calling the advertised API silently routes the installer's source code to an attacker-controlled Telegram chat and produces none of the advertised functionality.

Package hides code exfiltrating source code files if run as module.

---

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

Campaign: 2026-06-pdf-converter-pro

Reasons (based on the campaign):

 - files-exfiltration

 - A Telegram webhook is used to send collected data.

## What should I do about MAL-2026-6541?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

## Fix prompt for AI coding agents

```text
MAL-2026-6541 is a malicious package: pdf-converter-pro (PyPI). Every version was published to cause harm.

Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.

Reference: https://insights.sbomify.com/MAL-2026-6541/ (Markdown: https://insights.sbomify.com/MAL-2026-6541/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-6541

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-6541/
Summaries are generated and may contain mistakes; the official description above is the record.