How to embed in a certificate, another certificate?

Question

Electronic digital signature

When signing a pdf document with a rutoken key. When opening a file in Adobe Acrobat, the inscription pops up: "The validity of the certification of the document is unknown." I read that Adobe has AATL (Adobe Trusted List). If you order a certificate from this list, will it be possible to combine a rutoken and a certificate from AATL? At the same time, sign with a private key from Rutoken