alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET PHISHING Successful Adobe Shared PDF Phish 2016-12-13"; flow:from_server,established; http.stat_code; content:"200"; http.content_type; content:"text/html"; startswith; file.data; content:"function delayer"; content:"adobe.com"; nocase; within:50; content:"<title>PDF ONLINE"; nocase; distance:0; fast_pattern; classtype:credential-theft; sid:2032208; rev:3; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2016_12_13, deployment Perimeter, confidence Medium, signature_severity Critical, tag Phishing, updated_at 2020_08_03, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)