Where to get best PDF icons?

[toplisek]

Where to get best PDF icons

[KDLA]

Try deviant art. There are literally thousands of icon collections there.

[toplisek]

how is with copyrights and license?

[KDLA]

Each set states the usage/copyright.
Most are free.

[toplisek]

I have seen that some known website uses other than defined icon from Adobe.
See:
http://www.adobe.com/misc/linking.html

Sample is from known website. If I understand they use other than specified at my URL.