pdf-converter-proPyPI
Advisory published Updated
pdf-converter-pro is a confirmed malicious PyPI package (MAL-2026-6541) that steals credentials and exfiltrates sensitive data (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in pdf-converter-pro (PyPI)
What this malware does
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):
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files-exfiltration
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A Telegram webhook is used to send collected data.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for pdf-converter-pro (version 1.0.0).
If you installed it — respond
pdf-converter-pro is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If pdf-converter-pro 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
Campaign
References
Credits
- Amazon Inspector · finder
- Kamil Mańkowski (kam193) · reporter
Detect & block this
O3 blocks pdf-converter-pro-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.