Data of Desktop turned into Shortcuts (Shortcut Virus)??

Hello Guys,

few months ago, I made a copy of my hole desktop, because I had to much data, txt, pics etc.
I dragged all data into one folder named "Copy Desktop".

Today, I wanted to open a txt-file of my "Copy Desktop" Folder, and I just realized that all data in that folder turned into .shortcuts!

When I try to open one data from the "Copy Desktop" Folder, a window appears with the name "Shortcut problem" and if I want to delete the file.

Can someone please help me, fix that??? I need to have access to the data...!