Take potentially dangerous PDFs, office documents, or images and convert them to safe PDFs.
identifier "media.firstlook.dangerzone" and anchor apple generic and certificate 1[field.1.2.840.113635.100.6.2.6] /* exists */ and certificate leaf[field.1.2.840.113635.100.6.1.13] /* exists */ and certificate leaf[subject.OU] = N9B95FDWH4