Hey, is there any way to say with much confidence when a pdf was created (I'm on OSX)

Pretty sure I've just caught my old lettings agency trying to defraud me, stating when a 'cleanings invoice' was created would help my cause.

Its a pdf I was emailed, pretty sure the 'date created' and 'date modified' are from when the file was created, rather than sent/received/downloaded right?

I will ah, probably cease replying to this thread for the obvious legal reasons.