Starting with version 9 it has become possible to embed a Flex application inside of a PDF document. Now this opens up some new exiting possibilities, that much is certain.
However I can’t help thinking that virus writes will be just as happy. PDF documents are send around quite a lot and most people think they are completely safe. Now suppose some hacker embeds a malicious application in a PDF document? I have already heard stories that suggest this is already happening. Scary and not good.
So I guess I am not sure this is a good thing or not.