Is it possible to find out whether given PDF file is original one?

Question

Hello, PDF file. Document proporties checked using Acrobat. The results shows that modification and creation date is the same.  There is no advanced metadata options available so no XMP extent of data(or maybe I don't know how to look to find it). The file itself was created with a printing option and saved as a pdf file, as covered here: https://www.systoolsgroup.com/blog/convert-aol-emails-to-pdf-files/ Now, if the file's creation and modification dates are the same, is it means that the said file is original which means it was not modified and its content was not fabricated? It is somewhat easy to modify metadata data to own will but... is it possible somehow check whether given pdf is unmodified by the person that sent me the file or is it something that can't be verified by any means of software or knowledge. By saying that I want to check whether file is unmodified I mean the content of the file and text it includes. Just would like to know if text was unchanged and if there were any modifications to it.   Kind regards,

try67 · Answer

Those dates mean nothing. They can be very easily modified.If the person made changes to the file and knew what they were doing you won't be able to detect them. If they used a different font or didn't save the file under a new name it might be possible to detect such changes, though.

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