Unknown folders in OneDrive

Let me start by saying that one more time, you should never ever click on something if you don't know what it is. Let's say it was crypto malware, we would go from "Strange folders on my OneDrive" to "Why is my data encrypted" in matter of seconds.

Putting that aside, you should delete the folders and the file if you don't recognize them. Go to the OneDrive website and change your OneDrive password (consider setting up two factor authentication). You may optionally contact support to find out where the folders come from (as a normal user you have no access to any logs), but don't have high hopes about them responding.