The npm package 'pfp-block-mobile-steps' version 20.9.3 contains malicious code that downloads and executes opaque binaries from hardcoded Cloudflare Workers hosts or via DNS TXT record lookups. The payload is written to temporary files with stealthy names and executed without verification, exhibiting anti-analysis behavior. This activity is unrelated to the package's stated purpose and poses a risk of arbitrary code execution on affected systems.