What is the name of it, or description? Colors, etc?
What happens when your right click on it...
Once you find out the name, or the use from your father, go to
www.majorgeeks.com and then to Registry, and download RegCleaner by Juoni Vuorio.
This will allow you to remove it from the registry in such a way that you can restore it back to where it was if problems result....
Then right click on your desktop scren, select New Folder, then rename it Unknown or a name of your choosing, and drag that mysterious file into or onto the folder.
Then Use Windows Explorer to drag the folder from the desktop to your C: drive where it can stay and rest until you decide what to do with it.
If no troubles result, you can delete it in a few days... If troubles do result, use RegCleaner to restore it from where it is being save.
But my first choice would be to have your father do this, since it sounds as if he is involved.
The file is not doing anything, is it? Why not just leave it alone until you and your father or the owner can decide what to do.
Dragging it into a folder, then dragging the folder to the C:\ drive just saves it in an out-of-the-way spot where you do not have to think about it.