alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET PHISHING Successful CSIS Credential Phish"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/policy/id1383729472034823098/United-States-Nonpaper-on-Iran.pdf/"; fast_pattern; http.referer; content:!"csis.org"; http.request_body; content:"email="; content:"password"; classtype:credential-theft; sid:2034255; rev:2; metadata:attack_target Client_Endpoint, created_at 2021_10_26, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_04_18;)