ET MALWARE Possible PDF Dictionary Entry with Hex/Ascii replacement
Sourceet/open
CreatedDecember 24, 2013
UpdatedJuly 26, 2019
Classificationtrojan-activity
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Possible PDF Dictionary Entry with Hex/Ascii replacement"; flow:established,from_server; file_data; content:"%PDF-"; fast_pattern; within:5; content:"obj"; pcre:"/^[\r\n\s]*?<<(?:(?!>>).)+?\/[a-zA-Z\d]*?#(?:[46][1-9a-fA-F]|[57][\daA])(?:[a-zA-Z\d])*?#(?:[46][1-9a-fA-F]|[57][\daA])/Rsi"; classtype:trojan-activity; sid:2017899; rev:4; metadata:created_at 2013_12_24, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)
Metadata
created at2013_12_24
confidenceMedium
signature severityMajor
tagDescription_Generated_By_Proofpoint_Nexus
updated at2019_07_26
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