PDF malware analysis — malicious · 49954fcafc17659d

MALICIOUS

PDF

12.3 KB

MD5: 2a2e1fc84e4442ef776158fa0f95ef33 SHA-1: 02d5fdbc81321abaed4cd20c9a48e1333428ce2f SHA-256: 49954fcafc17659d5df7fe0adfe380076abd4ccabdc957b6de8e7aebcbaece5b

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, flagged by multiple heuristics as malicious. Specifically, the CVE-2007-5659 heuristic indicates the use of a known exploit targeting the Collab.collectEmailInfo function to execute JavaScript. The presence of deobfuscated JavaScript files suggests the script's purpose is to download and execute further stages. The 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` `ba7923f10070b3330dc6b140f7ddce7bd3c70bf9ded99741bc70f427544b1b7b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	11999 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `eb6a613b83dbb13cfcb5e13c49389c51148eded854e65254af6a505bb3da71c3`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4923 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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