alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED Blackhole PDF Payload Request With Double Colon"; flow:established,to_server; content:"/content/"; http_uri; content:".php?f="; http_uri; content:"|3A 3A|"; http_uri; pcre:"/\x2Fcontent\x2F[a-z0-9]{1,6}\x2Ephp\x3Ff\x3D[0-9]{1,5}\x3A\x3A[0-9]{1,5}$/Ui"; classtype:trojan-activity; sid:2014776; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2012_05_18, deployment Perimeter, malware_family Blackhole, signature_severity Critical, tag Blackhole, tag Exploit_Kit, updated_at 2019_07_26;)