Point pdf links to local files downloaded - feature request

[maguilella]

Is there any possibility that the original pdf file be modified to make the original link to point to the locally downloaded files?
A second, more interesting option would be to combine all pdf's in a single one and change every link to point internally at the specified page.
That would be interesting for example to save documents (PhD Tesis, Master Tesis, etc) in a single document that can be saved for long time without losing content.

[fidian]

I'm also looking for a way to rewrite URLs in a PDF file, though my use case would be to update links to point to a new location only. Any tool or method that does this would be wonderful.