PDF malware analysis — malicious · d4493dd537a99542

MALICIOUS

PDF

12.0 KB Created: 2010-03-03 06:40:57 Authoring application: Dozowizuofifeh

MD5: d1d5b8b72bd2777d61dee80d6545e2b6 SHA-1: b6f01c776455d7e591f7b60be846021a5cb5ddbf SHA-256: d4493dd537a99542951493a6880635dd9af699ae2a4a92d86b9f715508372b87

258 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains obfuscated JavaScript that is XOR-decoded using a key of 0x38. This script leverages multiple known vulnerabilities including CVE-2009-4324 (media.newPlayer), CVE-2009-0927 (Collab.getIcon), CVE-2007-5659 (Collab.collectEmailInfo), and CVE-2008-2992 (util.printf). The primary function of the script appears to be downloading and executing a second-stage payload, though the exact nature of the payload is not discernible from the provided evidence. The document body is heavily obfuscated and does not provide clear textual lures.

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_obj0020_000.js` `127cd6e89a8e79b42012e67fdefb161085a23bb04b075baa2e6f6383124021cd`	pdf-javascript-stream	PDF /JS object 20 at offset 0x29DD	1208 bytes
`page_word_xor_stage_000.js` `f79cb6396492fc3f84d20f988f26cb4025557f9420c0051b290e67aa8c54f506`	deobfuscated-js	page-word XOR decoded JavaScript (decompressed, key=0x38) at offset 0x112F	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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