Can I somehow convert .pdf files to .qif format.
Converting Adobe Portable Document Format files to Quicken Interchange Format File (.pdf to .qif conversion), most likely, relates to users attempting to convert their bank or credit card statements (in .pdf format) to Quicken format (.qif) in order to load/import those to Quicken.
Your best option would be to use one of several dedicated conversion tools, such as the PDF2QIF converter.