opening a password protected pdf

[Patton Echols]

I have agreed to modify an existing PDF to add fillable fields.  My 
intention is to import it into OO Writer and work on it there.  The PDF 
is readable and printable without a password, but OO demands a password 
to open it.

I ran pdfcrack on it and, after a while got a result:
found owner-password: 'pass5'
found user-password: ''
(# Note:  not the real password, but it is five characters)

Problem is that OO does not think it is the correct password.  I also 
tried pdftk to strip the password and it does not think that it is 
correct either.  Anyone have experience that may shed some light?  Other 
tools I might try?

By the way, the company that "owns" the pdf is ok with my efforts, but 
the employee who created it is no longer available so I can't just ask 
for the correct password.

Thanks,
--PE