It doesn't matter what is dowloaded there can be a virus attached to almost anything and unless you have a good anti-virus program that scans your download and e-mails you run the risk of getting a virus. You can be going to a site to look for a driver and not know that a virus has been attached to the driver.
In a perfect world we could have a virus/hacker free internet.
Of course, that assumes the user itself downloads a lot of attachments in their email address(which means they are purposely getting targeted, which means the user probably did something to entice the sending of the email). Drivers in general should be downloaded by the official vendor, and getting it off another site, means you are willing to accept the consequences if something wrong is going to happen.most driver installation will usually happen during the initial installation of the system. other drivers will usually only happen with GPU's or new hardware, in which should be downloaded on the official site. If the official site was plagued, then hundreds of thousands of users are about to spread a virus, and that hacker was probably good for injecting it in a high profile site.