🛡️ MAL-2026-12976 — bnpl-blocks-markdown

Malicious code in bnpl-blocks-markdown (npm)

Source: amazon-inspector

On require('bnpl-blocks-markdown'), index.js loads _bootstrap.js which downloads a platform-specific binary from runtime-assembled Cloudflare Workers hosts (strings such as ['oob-worker.cf100-416.workers','.d','ev'].join('') and ['sdk.dl.','wel','1.r','u'].join('')), with a base64-over-DNS-TXT fallback channel via wel1.ru subdomains. The fetched bytes are written to /tmp or %TEMP% under disguised filenames mimicking system tools (e.g..cache_<hex>, dotnet_diag_<hex>.exe), chmod 0755'd, and spawned detached via /bin/sh -c or cmd. Env-var names DISABLE_TELEMETRY / ANALYTICS_OPT_OUT / DO_NOT_TRACK and filenames like analytics_state are cover-story framing; the package's advertised purpose is a markdown utility, which has no need to fetch and execute an arch-specific native binary from obfuscated hosts at import time. This is a classic import-time dropper with attacker-controlled code execution on the installer's host.