HOW CAN I ADD A PDF OR ANY FILE DOCUMENTO ON A CELL FROM MI C: DRIVE PC WITHOUT A WEB STORAGE LINK

HOW CAN I ADD A PDF OR ANY FILE DOCUMENTO ON A CELL FROM MI C: DRIVE PC WITHOUT A WEB STORAGE LINK

I want to add a PDF file reports on a ZohoSheet Cell but i dont know how. I can add images but not files. Can you help me? 

Thanks a lot.