Searchable PDF files in sharepoint 2010

Hi All,

I Need to pack the metadata of particular scanned document into headers. So that i can search the PDF files.

Ex: Every organization has per-existing bulk of scanned PDF files.  almost in every case, these are purely PDF Image format, and cannot be searched, or crawled through the PDF i filter in SharePoint. 

After scanning the documents it should save in share point library with metadata to search the File.

I did't installed iFilter my environment.

I need compete details about this feature, like where can i get this software and how to proceed with them

Please help me