Having multiple PDF files you can merge them into a single PDF file using pdfunite command.
The command is included in poppler-utils package and is available in Fedora out of the box. If missed, can be installed as follows:
This was a startup. We worked 70 to 80 hours per week. We had the vision. We had the motivation. We had the will. We had the energy. We had the expertise. We had equity. We had dreams of being millionaires. We were full of shit.