Comment 11 for bug 774052

Same here on Xubuntu 14.04.

3.13.0-37-generic #64-Ubuntu SMP Mon Sep 22 21:28:38 UTC 2014 x86_64
pdftk 2.01

I tested failed pdf files and recognized, they created by iText (by lowagie.com).

> Producer: iText 1.4.8 (by lowagie.com)
> Pages: 2
> Encrypted: yes (print:yes copy:no change:no addNotes:no algorithm:RC4)
> Page size: 595 x 842 pts (A4)
> File size: 30845 bytes
> Optimized: no
> PDF version: 1.4

Splitting the file with pdfshuffler 0.6.0 worked.

> Producer: Python PDF Library - http://pybrary.net/pyPdf/
> Pages: 1
> Encrypted: no
> Page size: 595 x 842 pts (A4)
> File size: 28274 bytes
> Optimized: no
> PDF version: 1.3

Then using pdftk again on new file worked too.

> Creator: pdftk 2.01 - www.pdftk.com
> Producer: Python PDF Library - http://pybrary.net/pyPdf/
> Pages: 1
> Encrypted: no
> Page size: 595 x 842 pts (A4)
> File size: 28486 bytes
> Optimized: no
> PDF version: 1.4

So, has it something to do with the encryption or with the library which created the original pdf file ?