Fake download links on download pages are an easy way to accidentally install garbage software on your system. I'm seeing more of this stuff than I am actually viruses and, unfortunately, because of shady tactics, it's usually "self-inflicted" in that the user installs it themselves.
Chrome is taking steps to start blocking those with their Safe Browsing feature where, once clicked, a big red page alerts you that you might want to really reconsider progressing to the download.
I always recommend trying to get your downloads right from the authors and not a 'download site' but some authors try to save on bandwidth expenses and herd you to them anyway.
Full story here at AndroidPolice.com