I'm trying to get the hash of a pdf encrypted witn FOPN_foweb https://www.fileopen.com/encryption
Tried pdf2hashcat and pdf2john but they throw an exception because in the encryption dictionary they expect /O, /U or /P keys but instead there is a filter FOPN_foweb so they throw an exception (for accessing a dictionary with no elements after /O, /U, /P were collected).
Does somebody know how to obtain the hash from such pdf?
This is the encryption dictionary:
obj<</Filter/FOPN_foweb/V 2/Length 128/VEID(9.0)/BUILD(906)/SVID(797)/DUID(982)/INFO(...)>>
endobj
In the place of the '...' there are 568 letters, numbers and symbols. What is this?
In the documentation at fileopen.com they write that PDFs are encrypted via the methods defined in the PDF Specification. So the only issue seems to be how to obtain the hash.
Thank you!
Tried pdf2hashcat and pdf2john but they throw an exception because in the encryption dictionary they expect /O, /U or /P keys but instead there is a filter FOPN_foweb so they throw an exception (for accessing a dictionary with no elements after /O, /U, /P were collected).
Does somebody know how to obtain the hash from such pdf?
This is the encryption dictionary:
obj<</Filter/FOPN_foweb/V 2/Length 128/VEID(9.0)/BUILD(906)/SVID(797)/DUID(982)/INFO(...)>>
endobj
In the place of the '...' there are 568 letters, numbers and symbols. What is this?
In the documentation at fileopen.com they write that PDFs are encrypted via the methods defined in the PDF Specification. So the only issue seems to be how to obtain the hash.
Thank you!