Inorder to Recover Data from such an infected USB go to Start Menu and in Accessories go to Command Prompt after that use this command (Where j: is your USB path or it may be g: or something else depending on your system and partitions)
In CMD type this (don’t forget to replace j: with your own USB drive path):
attrib -h -r -s /s /d j:\*.*
After that go to USB and open it by Right Clicking it and selecting open. You will see that along with shortcuts your Data is also recovered and thus after this delete all shortcuts.