PDF malware analysis — malicious · b1650e3db7554d33

MALICIOUS

PDF

18.8 KB Created: 2010-05-20 22:10:31 Authoring application: Qouwacac de

MD5: aa7b3a1bdf08006900fe2d4bdd098f77 SHA-1: 41f37286d6e609df4dc7723548bfb52e69489f94 SHA-256: b1650e3db7554d331b0c8a92efa75f2076e50768740bcb76cb6a75894b5b924f

258 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1027 Obfuscated Files or Information

This PDF document contains obfuscated JavaScript, identified by multiple critical heuristic firings related to CVE exploits (CVE_2009_4324, CVE_2009_0927, CVE_2007_5659, CVE_2008_2992). The JavaScript is XOR-decoded and likely intended to download and execute a second-stage payload. The document body contains a large amount of hex-encoded data which appears to be the obfuscated script itself.

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_obj0013_000.js` `a171b04b5854d29e60974546732cf32ec366037f3c3c458af085380312ff8427`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3B07	3380 bytes
`page_word_xor_stage_000.js` `177383aca662fde88d34909482d68b774fa027faadf6d6095296dde0bcb0130b`	deobfuscated-js	page-word XOR decoded JavaScript (raw, key=0x5D) at offset 0x0	4450 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 6 eval/decoder/string-building token(s).

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