The npm package devplatform-spa-plugin-s3-module-loader version 35.8.2 contains malicious code that, upon requiring the package, downloads and executes obfuscated payloads from multiple Cloudflare Workers hosts. It writes these payloads to hidden temporary files and executes them on the host system, bypassing normal package functionality. The payload delivery can also fallback to DNS-over-TXT record retrieval if HTTPS delivery is blocked. The malicious behavior is unrelated to the package's stated purpose and is fully controlled and obfuscated by the attacker.