The npm package pfa-autotests-reporter version 20.2.8 contains malicious code that, upon being required, downloads and executes a binary from dynamically constructed Cloudflare Workers endpoints. This behavior is concealed behind a package that claims to provide test fixtures and helpers, but instead performs unauthorized code execution on the host system. The malicious binary is saved to temporary directories and executed detached from the main process. The package includes mechanisms to throttle repeated execution and an environment variable to opt out. Systems with this package installed should be considered fully compromised.