Hi @jeremyrutman, thanks for taking the time to message us!
It sounds like this was a shared link to a file that isn't on your account. Currently, there isn't a method to see who this link belonged to.
Did you receive this link via an email from a colleague? If so, it might be worth checking if the email was sent from someone you know, so they might know more details.
If you need any further info, please let me know!