I have seen that. This morning it is "`�Ѹ�". The name is random, and onedrive flags it. I found that you can safely delete them. Mine are saved in Documents\TurboTax. I had no other needed documents there, so if the same for you, you should be able to exclude from OneDrive Synch.
Choose which OneDrive folders you want to sync on Windows or macOS - Microsoft Support
