PDF malware analysis — malicious · 3d4ef54b92802657

MALICIOUS

PDF

12.3 KB

MD5: 00ed442aa5a2d64cf5132fccd157975b SHA-1: 2de69f5e3fbfd00e3b47726d82ff4b5407e871f4 SHA-256: 3d4ef54b92802657886674e1ae55f88bb82cd29e72d9f214e74113c4d9fc35df

138 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1059.001 Command and Scripting Interpreter: PowerShell T1059.003 Command and Scripting Interpreter: Windows Command Shell T1059.007 Command and Scripting Interpreter: JavaScript

The file is a PDF that exploits CVE-2007-5659 using embedded JavaScript. The JavaScript is obfuscated and appears to be designed to download and execute a second-stage payload, as indicated by the extracted JS files and ClamAV detection. The specific exploit mechanism involves the `collab.collectEmailInfo` method.

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` `f304d66076a8e481d26c283563cda38dd852f46dc6927fe20264175cd2f4a2ac`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12086 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `cdcf391bbaec25d0fe8faf0dff2ac8bee358fca2c0f914740d9decf3f7e0dfed`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4927 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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