How to restrict to save pdfs in media library?

Hi, I have one question. I have installed the “Generate PDF using Contact Form 7” plugin so that after getting a subscription email from the user in the contact form, the user will get a link to download the pdf.

But I have one issue. If 100 users subscribe and download the pdf then 100 times that pdf file will save in the media library. I don,t want that these 100 same files will show in the media library.

Is there any way to save them in another folder or these files will not save anywhere only the user will download?

Please guide me about this thing.

I will wait for your reply.