alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET PHISHING Successful Adobe Shared Document Phish 2015-11-14"; flow:established,from_server; file_data; content:"<title>PDF ONLINE</title>"; fast_pattern; nocase; content:"Document Has Been Removed"; nocase; distance:0; classtype:credential-theft; sid:2031738; rev:4; metadata:attack_target Client_Endpoint, created_at 2015_11_14, deployment Perimeter, confidence Medium, signature_severity Critical, tag Phishing, updated_at 2022_03_17, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)