The npm package dolyame-ui-navigation (version 35.7.3) contains malicious code that executes an attacker-controlled binary upon being imported. The package fetches a platform-specific executable from hardcoded Cloudflare Workers URLs and falls back to DNS-TXT resolution from suspicious domains. The downloaded payload is saved to temporary directories with disguised filenames, given executable permissions, and executed detached from the main process. This behavior occurs immediately on require() of the package, causing automatic execution of malicious code on the host system.