PDF malware analysis — malicious · 7d7137c5fff8b769

MALICIOUS

PDF

12.2 KB

MD5: 9c7cdb9f0ea1774c5f56c06345e4e955 SHA-1: 8590477c566c299a82d14efdefe520ce679da116 SHA-256: 7d7137c5fff8b769d87697d1edc9986e70b42e97d946d6ec75f0d590fb2e7d8c

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, specifically leveraging the 'collab.collectEmailInfo' function which is associated with CVE-2007-5659. This exploit is designed to execute arbitrary JavaScript code within the context of the PDF reader. The presence of deobfuscated JavaScript files suggests a multi-stage loading mechanism, common in PDF-based exploits aiming to download and execute further payloads.

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-36065 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36065
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` `9c67560e8c63b720885d3efc1627b844b86a6ec08e99e5b65a22eae832045756`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19C	431 bytes
`legacy_pdfkit_stage_000.js` `0834c606ea83dae6504bb26287fd62b54996ac094d5140735e9c1a51d8b46f30`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12446 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `5a986fd410c20b85a11c89806926e24dfd09dd5a6bb144f70b632df8ac7304ae`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5181 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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