ET MOBILE_MALWARE Possible iOS WebView Auto Dialer 2

alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MOBILE_MALWARE Possible iOS WebView Auto Dialer 2";
    flow:established,from_server;
    file_data;
    content:"URL=tel|3a|"; nocase; fast_pattern;
    pcre:"/^\+?[0-9-]{10,}[\x22\x27]/Rsi";
    content:"itms-apps|3a|"; nocase;
    content:"setTimeout"; nocase;
    content:"window"; nocase;
    pcre:"/^\s*?\.\s*?location\s*?\.\s*?href/Rsi";
    content:"for"; nocase;
    pcre:"/^\s*?\(\s*?(?P<var>[^\x3d\x3b\)\s]+)\s*?=\s*?0\s*?\x3b\s*?(?P=var)\s*?\<\s*?(?:0x)?\d{4,}\s*?\x3b\s*?(?P=var)\+\+\s*?\)\s*?\x7b\s*?(?P<var2>[^\x3d\x3b\)\s]+)\s*?=\s*?(?P=var2)\s*?\+\s*?[\x22\x27]\d+[\x22\x27]/Rsi";
    reference:url,www.mulliner.org/blog/blosxom.cgi/security/ios_WebView_auto_dialer.html;
    classtype:trojan-activity;
    sid:2023501; rev:2;
    metadata:affected_product iOS, attack_target Mobile_Client, created_at 2016_11_11, deployment Perimeter, confidence Medium, signature_severity Major, updated_at 2019_07_26;
)