Mirror 1 is fine. You just have to click the actual download button rather than the advert... which of course could download anything. The one in the green box, positioned above the Facebook widget, is the one you're after.
Mirror 2 seems to have started forcing a wrapper on you. They never used to do that. Notice the name of the file it tries to download is 'FileForum_Installer'.
If you cancel out of what it initially starts to download (assuming your browser is set to prompt for a location to save to), you can then click the 'click here to begin the download' link and get the right download.