PDF malware analysis — malicious · 2b3d36f520c95ec9

MALICIOUS

PDF

11.7 KB

MD5: b119f14a155514a34f8af55260bb6bce SHA-1: 16f0994e1aac82f214dbe57594595f648dbeac92 SHA-256: 2b3d36f520c95ec92eb9355649d7d70124667fc88aba1524a651902156b33384

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, specifically identified as exploiting CVE-2007-5659 via the 'collab.collectEmailInfo' method. This technique is commonly used to download and execute additional malicious content. The presence of deobfuscated JavaScript files further supports the execution of malicious code. The ClamAV detection 'Pdf.Exploit.Agent-36065' 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-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` `1f65ad89ec3f4cddebff5819a241057bcf4f0975c7a042315dfa207748fa100b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12065 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `b2a0aae085d9102ffbacd0e290b259c69527bdeeb9f7b03bfaf6646e438f75df`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4937 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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