PDF malware analysis — malicious · 94e18a1fd07568fa

MALICIOUS

PDF

12.2 KB

MD5: 1a5427381dd43552e0931f09c0385e14 SHA-1: c61f1a981409378157c59f0a89d3290c6cfbf482 SHA-256: 94e18a1fd07568fa2c9cc2b4c6e472ac67867ba986fde4c9b9315029c0845cf4

138 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains embedded JavaScript that exploits the CVE-2007-5659 vulnerability, specifically targeting the Collab.collectEmailInfo function. The heuristics indicate that this JavaScript is used to launch further stages, likely downloading and executing additional malicious content. The presence of deobfuscated JavaScript files further supports this analysis.

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.Exploit.Agent-36062 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36062
JavaScript action low 1 related finding 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` `068944f8c011a88ab770b45c6de142b9305a1f515d410204d5eadd9ac2b5bfb3`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19B	373 bytes
`legacy_pdfkit_stage_000.js` `7c00b18774bbbc7d4ee04224749f480c0badf3a19725d18360b3a18ef71b6dd6`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	11880 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `9fb9ddc8f3f63e0eb4ee2b41570a68d7aeb4d1f5909d96a7427eb7b75e260b08`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4919 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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