Converting .pdf documents directly to .p7s format.
Directly converting Adobe Portable Document Format to Digitally Signed Email Messages (.pdf to .p7s conversion) might not be possible. We are not aware of any available software or online conversion tool capable of such a conversion.
Your only option is to create an actual email message, attach your PDF document to it, along with a digital signature, and thus creating a .p7s file.
The database currently does not contain any pdf software converter.