alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET INFO Adobe PDX in HTTP Flowbit Set"; flow:from_server,established; file_data; content:"%PDX-"; within:5; flowbits:set,ET.pdx.in.http; flowbits:noalert; classtype:not-suspicious; sid:2025985; rev:2; metadata:affected_product Adobe_Reader, created_at 2018_08_10, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)