alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT Fiesta PDF Exploit Download"; flow:established,to_client; flowbits:isset,ET.Fiesta.Exploit.URI; file.data; content:"%PDF"; within:1024; classtype:exploit-kit; sid:2018408; rev:3; metadata:created_at 2014_04_23, signature_severity Major, updated_at 2024_03_13;)