We have configured a second SSA specifically for a web app. Searching PDF works great for webapps that are associated to the first SSA but not for the second. I have added PDF as one of the file types for the second SSA and ran a full crawl but it returns nothing. Is there any thing else that needs to be done to enable PDF crawling?
The issue was resolved by resetting the search index, restarting the search service and doing a full crawl.