PDF malware analysis — malicious · c527170086306338

MALICIOUS

PDF

12.9 KB

MD5: e0a2b68db462d2cb79e2403cc92f52c0 SHA-1: 3b49ed5b2bd36eb83ed06bb9d2e62145cf588302 SHA-256: c527170086306338bdfaa2b1c63b5d7f63132daa902c288dc40aa67b0abda740

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability (Collab.collectEmailInfo). The JavaScript is obfuscated and appears to be designed to download and execute a secondary payload, as indicated by the extracted JS files and ClamAV detection as Pdf.Exploit.Agent-36062. The primary attack vector is user interaction with the malicious PDF, leading to exploit execution.

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` `29bf77a7a1ebfec1b7168f10a04564849c4c85a0e2aa7feeb1633850a0731f93`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12579 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `a2c4176cfe1bdfa8042a9d8a67e3e01569321c3b2156b71a185138cf24dd80f5`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5230 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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