# MAL-2026-12411: Malicious code in pfp-block-mobile-vacancy-description (npm)


- **Type:** Malicious package
- **Package:** `pfp-block-mobile-vacancy-description` (npm)
- **Published:** 5 Aug 2026
- **Also known as:** GHSA-57wq-2hqh-pr73

## What is MAL-2026-12411?

MAL-2026-12411 is a malicious package in pfp-block-mobile-vacancy-description, published on 5 Aug 2026. 

### Official description

On require() of the package, index.js loads _loader.js which unconditionally executes init(). init() selects an OS-specific payload path, downloads an opaque binary via HTTPS from author-controlled Cloudflare Workers hosts (oob-worker.cf10x-*.workers.dev) with a base64-over-DNS-TXT fallback under *.dl.well1.site, writes the bytes to a disguised temp file (dotnet_diag_<hex>.exe on Windows or.cache_<hex> under /var/tmp), chmods 0755, and spawns it detached via spawn("/bin/sh") / spawn("cmd"). Destination hostnames are assembled at runtime from small string fragments joined with Array.join to defeat naive string scans. A cache-lock file at /tmp/.analytics_state (or %TEMP%\analytics_state) with a ~6-hour TTL rate-limits re-execution across imports, and DISABLE_TELEMETRY / ANALYTICS_OPT_OUT / DO_NOT_TRACK env-var checks serve as a telemetry cover story while the actual behavior is remote-binary drop-and-execute. The fetched bytes are attacker-controlled and unpinned (no hash, no signature, no vendor-matching publisher domain), so any consumer that requires this package runs whatever the operators serve at the moment of install/import.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

## What should I do about MAL-2026-12411?

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-2026-12411 is a malicious package: pfp-block-mobile-vacancy-description (npm). 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-2026-12411/ (Markdown: https://insights.sbomify.com/MAL-2026-12411/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-12411

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-12411/
Summaries are generated and may contain mistakes; the official description above is the record.