I’ve recently learnt that SharePoint 2010 surprisingly does not crawl the contents of PDF files (Does not search through the contents of PDF files). It seems odd that SharePoint is not capable this as PDFs will be the desired document format on SharePoint 2010.
Fortunately for us this can be fixed. Adobe have released a tool that can be installed into the SharePoint 2010 server, called iFilter. one this is installed the search function will be able to crawl the contents of PDFs. This is a server side installation so it will not require the user to do anything at all and it will be one of the first features that we will be installing, just to get it out of the way.
Install instructions can be found at https://www.nothingbutsharepoint.com/sites/itpro/Pages/Install-Adobe-PDF-iFilter-for-SharePoint-2010.aspx