PDF malware analysis — malicious · 37a22420446a57c6

MALICIOUS

PDF

10.0 KB Created: 2010-06-13 18:55:42 Authoring application: Fivosetacixazapa (via 704c4Noxeqesocewi)

MD5: b48545975686e49d25245e863da51a4f SHA-1: ae239e93be7ce1e1b15b3c16797da86ae3eb2db5 SHA-256: 37a22420446a57c682b47e21df7064c9bf7d76d1101b82b98acbc3bdc804296e

298 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

This PDF document is malicious due to the exploitation of multiple known vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659, CVE-2008-2992) via embedded JavaScript. The JavaScript is XOR-decoded and executed through the PDF's OpenAction trigger. This technique is commonly used to download and execute further malicious content, establishing a foothold on the victim's system.

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` `1a7fcb19fb8288a57b7f41c7939a634e3c6f353e8e50b128d5124ede525779ec`	pdf-javascript-stream	PDF /JS object 17 at offset 0x1A78	3772 bytes
`page_word_xor_stage_000.js` `6fa88846e5040e74d99777c13d493a4b52654c765f129808ba625b46c95310b6`	deobfuscated-js	page-word XOR decoded JavaScript (decompressed, key=0x7B) at offset 0x782	3328 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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