Is there anyway you could read an attachment on your record(PDF, Image, Word etc) and display it as PDF on your visual force page?
Yes you can, but you have to create a custom VF page that show the attachment, once you have that VF ready with its controller, you only need to render that page as a PDF.
You can achieve that with this at the beginning of your VF page:
<apex:page standardController="XXX__c" renderAs="pdf">
I hope it helps....
I don't think that would be possible. You can display Image or some html files too. But display PDF and word is not possible out of the box.
You can try to display pdf using iframe in the iframe src.