PDF malware analysis — malicious · 4ffba0b2138651bc

MALICIOUS

PDF

12.8 KB

MD5: fe27ffbe20101832c07a34c3c8ae5353 SHA-1: ba71a8f7904ded613ff81fdfa7d548269de4f92f SHA-256: 4ffba0b2138651bc4df8fccb55f72acad3e59a0f1ff6ea0e4493cc65d1887429

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, identified by the CVE-2007-5659 heuristic which specifically targets the Collab.collectEmailInfo JavaScript function often used in exploits. The analysis also detected suspicious extracted JavaScript files, indicating a multi-stage attack. The primary intent appears to be exploiting a known vulnerability to gain initial execution, likely leading to further 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-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` `8cd8b5549d3c8b490a41271afeb6eaa853dde37794f77f5d1ae48f70a6f55ba1`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12475 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `f0e89013b649600583242243e8d9866cac2d0607ec552b386559e42fe901218a`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5154 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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