PDF malware analysis — malicious · 7cae07e5a3f64be9

MALICIOUS

PDF

12.9 KB

MD5: bb14d01e2888c568a90be6f933d1f3d6 SHA-1: 4b0d22bd6d1eb4709b7a9ba6d7e7f1c154217a85 SHA-256: 7cae07e5a3f64be9ce5abcea06afa60fe1cfd7a74b6a9ab69159c7a4a372b863

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability, specifically using the Collab.collectEmailInfo method. This JavaScript is likely designed to download and execute a secondary payload, as indicated by the ClamAV detection name 'Pdf.Dropper.Agent-9448543-0' and the presence of deobfuscated JavaScript files. The attack pattern involves exploiting a known PDF vulnerability to initiate a malicious download chain.

Heuristics 5

Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (identified after JavaScript deobfuscation)
ClamAV: Pdf.Dropper.Agent-9448543-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-9448543-0
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `1847af0a099665b6ac45af66402e56ed64237a1b287618ee3d6643267fda6f35`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	343 bytes
`legacy_pdfkit_stage_000.js` `b1528315caa02116ca2b470c3e4bc31ff900715f18d7680ddfb5c166de32a9a6`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	12558 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `0f3492f91f0db5f9734bbe02196df5b9e01ada548db7658b8d1a42b2661ac896`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	5256 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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