I have a huge problem, and have no idea how to solve it.
There's supposed to be a virus on one of my server (called "cdpuvbhfzz"). Anyone has any idea on how to remove it? What software to install, what do do next. Also, is transferring an infected account on a different machine is also transferring a virus?
It's not a virus as such. Somebody has hacked in to your website and updated your website files. They've probably got in through a known bug in some of the applications you have on there, perhaps you have a bulletin-board system, or, an image gallery etc.
Do you have a backup of the site, that would be easiest way to clean up the mess. You'll also need to upgrade your applications to the latest versions, perhaps if you could post more information about your server and the software and we might able to work out where the attack occured.
If you move the account, the PHP pages will still be modified so this won't help.