with several browsers happy to automatically download whatever is provided to them, making a user download a libblahblah.so is relatively easy, and unless the user was aware of the ramifications of just even having such a file in a folder, might ls, cat, grep, etc in that folder like they do any other day
However, most of the latest versions of the mainstream browsers now intentionally avoid writing out such files to the downloads folder unless the end user specifically OKs it (due to situations like this!)
However, most of the latest versions of the mainstream browsers now intentionally avoid writing out such files to the downloads folder unless the end user specifically OKs it (due to situations like this!)