alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Request for PDF via PowerShell"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".pdf"; endswith; http.user_agent; content:"WindowsPowerShell/"; fast_pattern; reference:md5,544a65bfe51385bb148f23a4e3f140d6; classtype:misc-activity; sid:2044024; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_01_30, deployment Perimeter, performance_impact Moderate, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_01_30;)