RAR files are usually safe to use. But just like regular files, compressed files (RAR or ZIP) can also contain viruses or malware. How to open RAR files | Trend Micro Help Center
If you're looking for the technical side of what that download actually is: Download 449K rar
You click it. The download is instantaneous, a blink of the browser’s progress bar. The icon sits on your desktop: a stack of three tiny books bound by a leather strap. You right-click. RAR files are usually safe to use
In the world of terabytes and lightning-fast fiber, 449 kilobytes is a ghost. It’s too small to be a modern game, too large to be a simple text document, and just the right size to be something dangerous—or something forgotten. Download 449K rar