How to change date on old documents?

Paperwork
1

I’m beginning with paper work and I want to use old pdf documents but the date is always today

2

Hello,

Here you go:

paperwork_doc_properties_1
paperwork_doc_properties_11040×577 214 KB

paperwork_doc_properties_2
paperwork_doc_properties_21040×577 209 KB

paperwork_doc_properties_3
paperwork_doc_properties_31040×577 210 KB

Best regards,