alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET DELETED Blackhole hostile PDF v1"; flow:established,from_server; file_data; content:"|25 50 44 46 2d 31 2e 36|"; content:"|4b 69 64 73 5b 32 38 20 30 20 52 5d 3e 3e|"; distance:0; content:"javascript"; nocase; distance:0; classtype:trojan-activity; sid:2013991; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2011_12_06, deployment Perimeter, malware_family Blackhole, signature_severity Critical, tag Blackhole, tag Exploit_Kit, updated_at 2019_07_26;)