alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT StyX Landing Page"; flow:established,from_server; file_data; content:"|22|pdfx.ht|5C|x6dl|22|"; flowbits:set,et.exploitkitlanding; classtype:exploit-kit; sid:2016247; rev:6; metadata:created_at 2013_01_22, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)