Searching in PDF-file broken?

[Jörg-Volker Peetz <jvpeetz@web.de>]

Recently I got a PDF-file which displays alright with a pdf-viewer but searching
for text or numbers does not work correctly.

I tried different viewers like the one built into iceweasel, one of the
poppler-family like xpdf or evince, and mupdf.
The text search fails if using a whole word with its first letter (like "monat"
in the example file available at
http://www.file-upload.net/download-9507877/iText-2.0.8-example.pdf.html).
Searching without the first letter works.

Likewise, copying strings from a pdf-viewer results in several wrong letters.
Also for digits either searching nor copying works.

I was told that it works in Windows. I don't have a Windows system to check.

Has anybody else experienced this phenomenon? Is it a problem of some debian
package?
-- 
Regards,
Jörg-Volker.