alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Fake Adobe Update Request"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/en"; nocase; content:"/reader/download/?installer=Reader_DC_20"; nocase; within:45; pcre:"/\d{2}\.0\d{2}\.200\d{2}_English(?:_for)?_Windows/R"; http.host; content:!"get.adobe.com"; classtype:pup-activity; sid:2026735; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_12_17, deployment Perimeter, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_31;)