ET WEB_CLIENT Possible Javascript obfuscation using app.setTimeOut in PDF in Order to Run Code

Query · suricata

flow:established,to_client;
content:"PDF-"; depth:300;
content:"app.setTimeOut("; nocase; distance:0;
Raw source ET WEB_CLIENT Possible Javascript obfuscation using app.setTimeOut in PDF in Order to Run Code · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET WEB_CLIENT Possible Javascript obfuscation using app.setTimeOut in PDF in Order to Run Code";
    flow:established,to_client;
    content:"PDF-"; depth:300;
    content:"app.setTimeOut("; nocase; distance:0;
    reference:url,www.h-online.com/security/features/CSI-Internet-PDF-timebomb-1038864.html?page=4;
    reference:url,www.vicheck.ca/md5query.php?hash=6932d141916cd95e3acaa3952c7596e4;
    reference:cve,2018-4980;
    reference:cve,2018-4961;
    classtype:bad-unknown;
    sid:2011868; rev:5;
    metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2010_10_29, cve CVE_2018_4980, deployment Perimeter, confidence Medium, signature_severity Major, tag Web_Client_Attacks, updated_at 2019_07_26;
)

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