PDF malware analysis — malicious · 0f4459d20c8f088c

MALICIOUS

PDF

7.0 KB Created: 2010-10-12 14:20:47 Authoring application: Bgecolemdisoginelejaci (via b0dbcVinavepleziueti)

MD5: b6adc4c514ce1689f3b4a5ac9c92f21c SHA-1: 418290c99dc1854b35e8033f79232835fdce10ce SHA-256: 0f4459d20c8f088c8320b1269541d79d1fbcf2def46c1cb6583b9db3616d8bc3

306 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file contains embedded JavaScript that is obfuscated using XOR decoding and hex escape sequences. Heuristics indicate that this JavaScript exploits multiple known Adobe Reader vulnerabilities, including CVE-2008-2992, CVE-2009-4324, and CVE-2009-0927. The primary function of this exploit kit appears to be the execution of further malicious code, likely a second-stage payload downloaded from a remote source, although the specific download URL is not directly extractable from the provided evidence.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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)
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)
Multi-CVE Adobe Reader JavaScript exploit kit critical PDF_ADOBE_READER_MULTI_CVE_JS_KIT

One recovered JavaScript stage contains multiple version-gated Adobe Reader exploit branches. This is stronger evidence than independent API keywords: the PDF is selecting old Reader vulnerabilities by viewer version and running heap-sprayed Acrobat JavaScript exploit paths.
Suspicious extracted artifact medium 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.
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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0010_000.js` `9831312efd52fddc921fa42b5f0524183ce37990ed0b97fffae684698b8a4b87`	pdf-javascript-stream	PDF /JS object 10 at offset 0x1291	2403 bytes
`page_word_xor_stage_000.js` `444f6419aa3ad11f5771853dfe35a7533b9a7394226c729ffe069624be3b11f0`	deobfuscated-js	page-word continuous-hex XOR decoded JavaScript (decompressed, key=0x5D) at offset 0x8C	6786 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 3 long hex-escaped blob(s).

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