PDF malware analysis — malicious · f640e69b832b2450

MALICIOUS

PDF

12.2 KB

MD5: 2abb521ec6c1af3c94ac541f061919d5 SHA-1: 9f624f4da2afd16f247a8f834981ba75adffeb7c SHA-256: f640e69b832b24503f3b31410850054f42e5aa381010300c44c0ef251f541155

138 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 JavaScript

The PDF file contains embedded JavaScript, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2007_5659 heuristic indicates the use of a known exploit targeting the 'collab.collectEmailInfo' JavaScript function within PDFs. This exploit likely decodes and executes a malicious script, as suggested by the extracted JavaScript files and the ClamAV detection as Pdf.Exploit.Agent-36062. The primary intent appears to be the execution of a secondary payload, typical of exploit-based PDF droppers.

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` `1a70524ce739417de8c501a354cdec5ead4a3c1874ef78b509cfc544d8734d51`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	11772 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `c1c176ac0a9358f45a437b5d949b4fcfa2ee6008a13eb58c896c25d7e8eb8d57`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4915 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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