Hi Foster,

You can achieve this by installing the Knowledge Management System module.

1. Go to Settings and install the module "knowledge" 
2. Then under Settings > Configuration > Knowledge, make sure to check "Manage Documents" and apply the changes.
3. A popup will appear, click on "Apply"
4. You can now open any record (eg. a product) and see the "Attachement(s)" button on top of it.

You can attach different file formats (PDFs, JPEG, etc.)

Regards