PDF malware analysis — malicious · 584528b0283ca330

MALICIOUS

PDF

18.6 KB Created: 2010-01-01 07:27:45 Authoring application: Fexaxououazobb

MD5: 2d126eafe1a3220f7e1a9c03cf2bfc4b SHA-1: 5c89d942fab1ff5e6a057db49face6880f1cd89b SHA-256: 584528b0283ca33080d0a258f1a2c76d7c5800abcc4d95dbf16953c7f819c455

260 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious Link/URL

The PDF file contains multiple critical heuristic firings indicating exploitation of CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659 through embedded JavaScript. The ClamAV detection of 'Pdf.Dropper.Agent-7262649-0' further supports its malicious nature. The embedded JavaScript streams, particularly the deobfuscated 'legacy_pdfkit_stage_000.js', are highly indicative of a dropper mechanism designed to download and execute further malicious content.

Heuristics 7

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)
ClamAV: Pdf.Dropper.Agent-7262649-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7262649-0
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_obj0012_000.js` `92727c590b9f8bcf1e2515f6f959a89ec88fc790ac70198f50f991fb40c11f8e`	pdf-javascript-stream	PDF /JS object 12 at offset 0x544	1140 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0028_001.js` `169195c1cb7610f4e921afbc56edc88895bafb65e53977d67c4a9740d94c9a4a`	pdf-javascript-stream	PDF /JS object 28 at offset 0x1B9	2403 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `3a4ec5558058a83f8c8dbb9bddf991981d78ef4296a354cfe46730e49ed0b8d0`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x784	33614 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 96 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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