PDF malware analysis — malicious · c6920529e5f994d3

MALICIOUS

PDF

39.9 KB

MD5: d3864be7607e471049014896eb9048f3 SHA-1: 82f288877233150a62dccddfd5b8c8b71210e922 SHA-256: c6920529e5f994d3f80e4b9dfee0aa5c3dea9cc8a871d685152ba0741d7c417c

178 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript and U3D content, triggering critical heuristics related to CVE-2007-5659 and ClamAV detection (Pdf.Exploit.Agent-36065). The embedded JavaScript, specifically the 'collab.collectEmailInfo' function, is indicative of an exploit attempting to execute arbitrary code. The presence of deobfuscated JavaScript files suggests a multi-stage attack. The primary attack pattern involves exploiting a known vulnerability to achieve code execution.

Heuristics 6

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)
U3D/3D content in PDF — Adobe Reader 3D parser CVE-family indicator high CVE related PDF_U3D_CVE_RELATED

PDF contains U3D (Universal 3D) or 3D annotation content — CVE-2011-2462 and CVE-2009-3953 are critical vulnerabilities in Adobe Reader's U3D processing that allow arbitrary code execution. U3D content in PDFs is extremely rare in normal documents.
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 4

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 0x1A3	431 bytes
`legacy_pdfkit_stage_000.js` `f3b7b6e7d68ccbfa461ebea9953f1961acf2d25d3fdee024348e80a4750d2853`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x31C	13126 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `69e9c6af86d041b608d8746e4a2d01f591fa379866c1f75e5d8e74ebbf190570`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x31C	5502 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`u3d_00_off00003310.bin` `be9b6f51ccc10ed67099a2e70bdc0d7433f445b059ca7dff9f11d5199e632bb6`	pdf-3d-stream	PDF U3D 3D stream at offset 0x3310	27444 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.99, consistent with packed or encrypted content.

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