PDF malware analysis — malicious · 3fc6d0c65e35e32e

MALICIOUS

PDF

12.4 KB

MD5: 3ae1d0ff25a926cf56ee9e025adf3e75 SHA-1: 1db36aea4bd6736dd4cf4fa2e36482bc6adf89a6 SHA-256: 3fc6d0c65e35e32e90153bce899a63e65957157287476b891d3b8ca04e884514

318 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: JavaScript T1190 Exploit Public-Facing Application

The PDF file contains embedded JavaScript that exploits several legacy Adobe Reader vulnerabilities, including CVE-2009-4324, CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. Static analysis recovered a deobfuscated JavaScript file which likely serves as the initial stage for downloading and executing a secondary payload. The ClamAV detection 'Pdf.Exploit.Agent-36291' further confirms its malicious nature.

Heuristics 8

media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324

PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (identified after JavaScript deobfuscation)
Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927

PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (identified after JavaScript deobfuscation)
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)
util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992

PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (identified after JavaScript deobfuscation)
ClamAV: Pdf.Exploit.Agent-36291 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36291
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0076_000.js` `21b3d66af4bad9dd18af1c36713317619428f13cc2d7f10f78dd25a61d84e614`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11550 bytes
`legacy_pdfkit_stage_000.js` `f5016b1509d374bd49e0786dbbd039bd723f4c33d04807d5506f3e4531965556`	deobfuscated-js	string-index array decoded JavaScript at offset 0x369	3858 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 11 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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