alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT DRIVEBY Nuclear EK PDF Struct (no alert)"; flow:established,to_server; flowbits:set,et.Nuclear.PDF; flowbits:noalert; http.uri; content:"/14"; fast_pattern; pcre:"/\/14\d{8}(?:\.pdf)?$/"; classtype:exploit-kit; sid:2019209; rev:16; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Any, attack_target Client_Endpoint, created_at 2014_09_22, deployment Perimeter, malware_family Nuclear, confidence High, signature_severity Critical, tag DriveBy, tag Exploit_Kit, tag Nuclear, updated_at 2024_03_19;)