What the revocation data that was found says about one certificate.
public enum PdfRevocationStatus
RFC 6960 §2.2 (good, revoked, unknown); RFC 5280 §5.3 and §6.3.
kind:method, kind:property, kind:ctor. Press Esc to clear.GoodA CRL or OCSP response the issuer signed shows the certificate was not revoked at the validation time.NotCheckedNo CRL or OCSP response that applies at the validation time was found, or none was fetched.RevokedA CRL or OCSP response the issuer signed lists the certificate as revoked (see RevocationTime).UnknownAn OCSP responder answered that it does not know the certificate (RFC 6960 §2.2).