SQL 2012 :: PDF Not Found In FT-Index On File Table

I have a filetable and use a statement like

SELECT [name],file_stream
FROM dbo.Inkoopfacturen
WHERE FREETEXT(file_stream, 'Factuur');

It will return the text found in a .pptx but not in a pdf. There are no errors in the FT-log. It tells me that the FT-index is succesfully build.

I have downloaded the iFilter for Adobe (installed it in a folder with a short name), set the temp variable to the bin folder of the installation.

I've executed the following queries:

EXEC sp_fulltext_service 'update_languages';
EXEC sp_fulltext_service 'load_os_resources', 1;
EXEC sp_fulltext_service 'restart_all_fdhosts';
Exec sp_fulltext_service 'verify_signature', 0

When I run the following statement, it'll show pdf in the resultset.

SELECT * FROM sys.fulltext_document_types order by document_type

Still, content is not found.