ET POLICY PDF With Embedded File

Query · suricata

flow:established,to_client;
file_data;
content:"obj";
content:"<<"; within:4;
content:"/EmbeddedFile"; distance:0;
pcre:"/\x3C\x3C[^>]*\x2FEmbeddedFile/sm";
Raw source ET POLICY PDF With Embedded File · 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 POLICY PDF With Embedded File";
    flow:established,to_client;
    file_data;
    content:"obj";
    content:"<<"; within:4;
    content:"/EmbeddedFile"; distance:0;
    pcre:"/\x3C\x3C[^>]*\x2FEmbeddedFile/sm";
    reference:url,blog.didierstevens.com/2009/07/01/embedding-and-hiding-files-in-pdf-documents/;
    classtype:bad-unknown;
    sid:2011507; rev:8;
    metadata:created_at 2010_09_28, confidence High, signature_severity Informational, updated_at 2019_07_26;
)

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