Make newspapers? As in creating content?
Assuming all you need to do is type stuff up, you can use just MS Word or LibreOffice Writer, both can save as PDF.
If you're actually going to be laying stuff out and doing typesetting, I can't really help you. The only typesetting program I've ever used is LaTeX, but I'm not sure if it's suitable for newspaper.
Is this a new function or something? It probably wouldn't hurt to just ask someone previously responsible for the job what software they used for it.