Content not found with PDF iFilter

[Horst]

I have problems to find PDF content.
I can find it with Windows Indexer and also with our Everything script.

The installed x64 iFilter is PDFlib TET PDF IFilter
https://www.pdflib.com/download/tet-pdf-ifilter/
I use it since many years and it runs fine as can be seen with the Windows search indexer.

XY searches thru 163 *.pdf files in 10 seconds, which I find much to long, but it finds nothing.
Configuration for using iFilters is set to "Use 64-bit iFilters for content search"

[admin]

Select a PDF file and run text extracttext();. You will see what XY sees.

[Horst]

With the TET PDF iFilter the result of text extracttext(); is empty.
If I set the PDF iFilter to SumatraPDF or PDF-XChange it finds text
but still doesn't find the content which is for shure there.

[admin]

Can I have one of those PDFs?

[Horst]

Here is one of many examples.
Extract the pdf file from it and search for the word Computing

zpaq - Journaling archiver for incremental backups.zip

[admin]

Works fine. (PDF-XChange)

[Horst]

Not for me, tested with 3 available iFilter modules
Isn't a real problem as I do content searches always with Everything

[highend]

Works fine here as well, SumatraPDF x64 with support for epub, mobi, etc. (https://mega.nz/folder/WwIiFDyZ#eA2g4lws9YNOuEI0a9Dkpw)