Do you know what the content of the file is (and I mean that generally)?
It is entirely possible that there is no text that can be OCRed, for example, if the file is several pages of photographs.
Brian - Windows 10 Home, 64-Bit, Version 1809, Build 17763
Explanations exist; they have existed for all time; there is always a well-known solution to every human problem — neat, plausible, and wrong.
~ H.L. Mencken, AKA The Sage of Baltimore