The npm package 'claims-constants' version 35.2.2 contains malicious code that executes upon import. It downloads platform-specific binaries from obfuscated Cloudflare Workers subdomains and uses a DNS-TXT record covert channel fallback to retrieve additional payloads. These binaries are saved to temporary directories with disguised names, given executable permissions, and executed detached from the main process. The package's stated purpose is unrelated to this behavior, indicating deliberate malicious intent.