Not permanently. You can drag it to the Recycle Bin. You can Shift+Delete . You can run rm -rf . It will vanish. But check your download folder again after a system reboot. It’s back. The timestamp reads 11/22/1963 | 12:30 PM . The file hash is different, but the name is the same. So, what is Eleven22SixtyThree.zip ?

I haven’t downloaded it. I’m not going to.

It is a grainy, black-and-white photograph of a young boy, perhaps 12 years old, wearing a heavy winter coat and holding a sign. The sign is blurred, but forensic upscaling suggests it reads: "I SAW THE SECOND SPRAY."