PDF malware analysis — malicious · bbe38fda881a99e5

MALICIOUS

PDF

13.1 KB Created: 2010-03-05 08:40:22

MD5: da12a0c5a57a53e75ea1c3d622839c93 SHA-1: d8550a013fd449723c4fd37cb12c137bde2651f6 SHA-256: bbe38fda881a99e5092db6b10c23a66bb11f92ab88517a3fbd1aaf8098011b1a

288 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file leverages multiple known vulnerabilities, specifically CVE-2009-4324, CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992, to execute embedded JavaScript. The JavaScript is XOR-decoded and obfuscated, indicating an attempt to hide its malicious payload. The primary function appears to be exploiting these CVEs to run arbitrary code, though the exact second-stage action is not discernible 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)
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)
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_obj0022_000.js` `046028c301ea55bf6d66b4719ebe1efd29aa101dd8660698ca0559cc9add66f9`	pdf-javascript-stream	PDF /JS object 22 at offset 0x2EDF	1275 bytes
`page_word_xor_stage_000.js` `f79cb6396492fc3f84d20f988f26cb4025557f9420c0051b290e67aa8c54f506`	deobfuscated-js	page-word XOR decoded JavaScript (decompressed, key=0x99) at offset 0xEAE	3215 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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