I am quite sure that Revelation ( http://snadboy.com/RevelationV2.zip ), detected as Application.Passrevel.A and Application.CodeRevel.A is not malicious. It's an application that reveals the text in password type textfields if you drag a crosshair from it's UI over those. This program does not do this in the background, requires user interaction to do so and I willfully manually downloaded it. So as long as it doesn't perform additional tasks in the background which I am not aware of, this application should be fine.

Like you said: "It's an application that reveals the text in password type textfields" and it is detected as such. If you wish, you can disable reporting of such detections on your computer from BitDefender's options.
Detection will not be removed.