Your shannonShannon entropy score of 7.9 is very high (the scale goes from 1-8).
While I can't say for sure that this is the result of randomwareransomware encrypting the files, it seems likely when we take into account your previous positive finding that identifies this as CryLocker.
I looked through my go to list of decrypters but didn't find one that specifically mentioned CryLocker. It's possible the identification of CryLocker wasn't quite accurate, and one of those decrypters could still help.