alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING SUSPICIOUS *.pdf.exe in HTTP URL"; flow:to_server,established; http.uri; content:".pdf.exe"; nocase; classtype:bad-unknown; sid:2013476; rev:3; metadata:created_at 2011_08_26, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_20;)