PDF malware analysis — malicious · 2a5a5e6a40f60c9e

MALICIOUS

PDF

9.9 KB Created: 2010-06-06 12:38:58 Authoring application: Pwezicohibemadafi (via 57fbeSwasezoka)

MD5: 798ce1f5c353bff6aeccfaa7cd6f04a8 SHA-1: 4894f0e41eec4e2e97f22d416e61b85181059961 SHA-256: 2a5a5e6a40f60c9effd57911f86e0bfe6ff3789545758777b78956e96cba5caf

298 Risk Score

Malware Insights

MITRE ATT&CK

T1204 User Execution

The PDF file contains embedded JavaScript that is XOR-decoded and executed using multiple known exploits (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659, CVE-2008-2992). The 'OpenAction' trigger and the presence of obfuscated JavaScript streams indicate that the primary intent is to exploit these vulnerabilities to run malicious code. The deobfuscated JavaScript likely serves as a downloader for a second-stage payload, although the specific download URL or payload is not directly extractable from the provided evidence.

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)
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
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_obj0017_000.js` `dfaf0df11780b2f40266faa477fe5440b90e0d3d484dce0dd1abec0223b6c294`	pdf-javascript-stream	PDF /JS object 17 at offset 0x19D2	4002 bytes
`page_word_xor_stage_000.js` `11237b14b2d926c1daa1be5764d141d4c89c61662ae20b931152c525001fe2dd`	deobfuscated-js	page-word XOR decoded JavaScript (decompressed, key=0xEE) at offset 0x7D1	3028 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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