PDF malware analysis — malicious · dec0c4e85d9ca18a

MALICIOUS

PDF

12.5 KB

MD5: 0736df78506e91ea5f20c8c7c3a44093 SHA-1: 2fe6f16749de85b66ab9b77548595303db026258 SHA-256: dec0c4e85d9ca18a9217cf4c819a566f71a3a80cf424101c60891c199c8e3cfd

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by multiple heuristics including 'PDF_JAVASCRIPT' and 'PDF_JS'. A critical heuristic, 'CVE_2007_5659', specifically points to the exploitation of a vulnerability using the Collab.collectEmailInfo method to execute JavaScript. This JavaScript is further obfuscated and split into multiple files, suggesting a multi-stage download and execution process. The ClamAV detection 'Pdf.Exploit.Agent-36062' confirms the malicious nature of the file.

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 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` `3ca718d5eb5ddee61b1546ce50a21bf780fee16d172a788f13ee4a20f0faaf22`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12137 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `01dd6f34213ae7e5c4e03d82f0df73eebd7bac7246cd9c4d6649f71c7359e0d2`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5038 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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