Maybe an older version of GhostScript might be your firend here. Some of the earlier versions don’t honour the security bits set inside a PDF…
It’s a bit of a pain - it’s almost as if Wavecom doesn’t want us to use their examples - although I’ve found more than a few examples that won’t compile cleanly…
While we’re on the subject of the “usability” of the PDF documentation, it would be really useful if Wavecom would enable the’Annotation’ feature available in Adobe Reader:
In the old days of paper documents, you could scribble notes to yourself in the margins; the Adobe Reader ‘Annotation’ feature lets you do the same in PDFs!
Ghostscript should be able to re-parse the PDF into another PDF with all the security bits disabled - or strip the PDF out into a Postscript file (which is mostly text).