My goodness no. Absolutely not. This is supposed to be a secure system, that's why you can't just get to local files either. Remember PDFs could come from anywhere.
No. Please describe what you want to do in detail so we can see if there is any way, rather than looking for general holes in the security model. I Don’t understand “access local folder file”.
Can you please check the details
I'm sure you cannot do this. What a security hole it would be.