ET INFO SMTP PDF Attachment Flowbit Set

Query · suricata

flow:established,from_server;
content:"|0d 0a 0d 0a|JVBERi"; fast_pattern;
flowbits:set,ET.pdf.in.smtp.attachment;
flowbits:noalert;

Rule dependencies

Feeds into

  • Nothing indexed reads ET.pdf.in.smtp.attachment.
Raw source ET INFO SMTP PDF Attachment Flowbit Set · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert smtp $EXTERNAL_NET any -> $SMTP_SERVERS any (
    msg:"ET INFO SMTP PDF Attachment Flowbit Set";
    flow:established,from_server;
    content:"|0d 0a 0d 0a|JVBERi"; fast_pattern;
    flowbits:set,ET.pdf.in.smtp.attachment;
    flowbits:noalert;
    classtype:bad-unknown;
    sid:2024236; rev:3;
    metadata:attack_target SMTP_Server, created_at 2017_04_21, deployment Perimeter, confidence High, signature_severity Informational, updated_at 2019_10_08;
)

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