It seems that qif to pdf conversion is mostly related to Quicken Interchange Format (.qif) export to PDF format (.pdf). If you do not have access to Quicken, you should be able to achieve this using any spreadsheet editor that Quicken formats.
Another possible, yet completely different, way to convert qif to pdf would be saving older QuickTime images (also .qif) to PDF format. This can be possible done using a graphics editor that can print to PDF, either via export function or with a virtual PDF printer installed.