The npm package 'checkout-todo-test' version 35.5.9 contains malicious code that downloads and executes platform-specific binaries from anonymous Cloudflare Workers hosts. It uses a DNS-TXT covert channel to reconstruct payloads, evades static analysis by runtime-assembling hostnames, and executes the downloaded binaries without verification. The package disguises this behavior as telemetry/analytics but exhibits characteristics inconsistent with legitimate telemetry software.