The index301.php segment strongly suggests a . This is a server-side instruction telling your browser that a requested page has permanently moved to a new location. While legitimate sites use redirects to manage changing URLs, cybercriminals often exploit them to create complex, cloaked paths. You click on a link that promises a software key, you’re invisibly passed through one or more redirects, and you end up on a page that may look official but is designed to serve you malicious ads or trick you into downloading malware. This method masks the true origin of the file and makes tracking the source of the infection difficult.