PDF malware analysis — malicious · eb891b7c3098715f

MALICIOUS

PDF

12.5 KB

MD5: c4a7d498d0252f5a536eed50ade0990a SHA-1: 4e17b2301a5ac30ba1781e6b5d18ebabdb1381cb SHA-256: eb891b7c3098715f100f255a9e38a81998780bb52f2104d4d68ac9c7d69bd98e

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, triggered by the 'Collab.collectEmailInfo' function, which is associated with CVE-2007-5659. This exploit is designed to execute arbitrary JavaScript. The deobfuscated JavaScript files suggest a multi-stage download and execution process, typical of exploit kits aiming to deliver a secondary payload. The presence of ClamAV detection further supports its malicious nature.

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` `ac4e97e4c33a13cc6b5255bd0e2cd82094cc85f29879bd44501a8425cc9da242`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12259 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `83bba5700f8db851ebcbc4d1e58c8c3d90ab9cd7230f07455e4207f364c5eb04`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5049 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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