The npm package 'nottuff25' version 1.7.7 is identified as malicious. It misrepresents itself by shipping a browser ServiceWorker and a static site unrelated to its advertised purpose. The package contains a bash script that automates mass publication of numerous sibling malicious packages, indicating a coordinated namespace-pollution campaign. Additionally, it includes browser-side adware that opens a popunder on user interaction. There is no evidence of install-time remote code execution or credential theft, but the package's presence indicates a compromised environment.