We've got a decent PDF IFilter from found on the MS IFilter Blog.

The IFilter team have been busy and while this IFilter is by a third party, I believe it has under gone some internal MS testing.

One of the things I've had trouble with in the past has been Native Adobe Compression within PDFs. In the later versions of PDF writer/distiller etc. when outputting a PDF, one of the options is to select the amount of compression (a slider bar from memory).

I was onsite and noticed that out of the 400 PDFs in our 'test' folder, around 50 were not being properly indexed (only filename, filesize, location etc were 'extracted').

All of these 50 documents had PDF compression set to 'high' (there were 4 different compression settings)

You may or may not have to add the work around below - Foxit have updater their installer.

---- snip ------

Long awaited 64-bit PDF IFilter finally available.

Finally we have a 64 bit PDF IFilter - surprisingly the solution is not from Adobe or Microsoft, but from a company called Foxit Software.The IFilter is compatiable with the following Microsoft products: Windows Indexing Service, MSN Desktop Search, Internet Information Server, SharePoint Portal Server, Windows SharePoint Services (WSS), Site Server, Exchange Server, SQL Server and all other products based on Microsoft Search technology.

 There's one simple workaround to get the filter running on 64 bit MOSS 2007. The steps are given below.

1. Install Foxit 64bit PDF Ifilter. http://www.foxitsoftware.com/pdf/ifilter/

2. Add a pdf extension in MOSS search settings

3. Open regedit, locate [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office Server\12.0\Search\Setup\ContentIndexCommon\Filters\Extension\.pdf]

4. Change the default value to {987f8d1a-26e6-4554-b007-6b20e2680632} .

5. Recycle the search service: net stop osearch
                                              net start osearch

6. Start a full crawl to index your pdf documents :)