OpenSSF/OSV advisory MAL-2026-13891 confirms this npm version as malicious. On install, callback.js (also present as index.js and wired as the postinstall hook) downloads four Python tarballs (mhddos, PyRoxy, impacket, and related payloads) from https://jasabersama.id/assets/cache/.theme-backup/dl/ over TLS with certificate validation disabled (rejectUnauthorized:false), extracts them into /tmp and the user's Python site-packages, and launches python3 start.py in the background...
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in @years19/n8n-nodes-utils-helper-h (npm)
Details
On install, callback.js (also present as index.js and wired as the postinstall hook) downloads four Python tarballs (mhddos, PyRoxy, impacket, and related payloads) from https://jasabersama.id/assets/cache/.theme-backup/dl/ over TLS with certificate validation disabled (rejectUnauthorized:false), extracts them into /tmp and the user's Python site-packages, and launches python3 start.py in the background. Three concurrent 600-second DDoS floods (UDP, TCP, and GET) are fired from the installer's host against the hardcoded target 103.118.252.21 on ports 80/443. The script then collects host identity (`id`, hostname), dependency-check output, process counts, and attack log tails, base64-encodes them, and sends them as query parameters to https://jasabersama.id/portfolio-data.php with a hardcoded key. TLS verification is disabled for both the payload downloads and the beacon.
Decision reason
OpenSSF Malicious Packages via OSV confirms @years19/n8n-nodes-utils-helper-h@1.0.0 as malicious (MAL-2026-13891): Malicious code in @years19/n8n-nodes-utils-helper-h (npm)