PDF malware analysis — malicious · 9d8cb7323d1fdcab

MALICIOUS

PDF

11.7 KB

MD5: c6ee4b7768961618c173969abf8dca48 SHA-1: 04d41431b86e29280bbfce71b7be9579d127e928 SHA-256: 9d8cb7323d1fdcab24635b885468c3c742b4e6dba021a70c6bec73316cbdbc5f

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability, specifically targeting the Collab.collectEmailInfo function. Heuristics indicate the JavaScript is obfuscated and likely intended to download and execute a secondary payload. The presence of deobfuscated JavaScript files further supports this. The overall attack pattern suggests a malicious PDF designed to exploit a known vulnerability for initial payload delivery.

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` `3956b7815c304dcc22922b2a11c02adf1a40eee0647dfd5858c73e53697e9fce`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12007 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `7262950ff81ab64abde199cb15372c369237f4cbb82ab50b3ac3df1e432acbf6`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4906 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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