PDF malware analysis — malicious · e2c977638b86fd02

MALICIOUS

PDF

12.6 KB Created: 2010-02-24 17:43:22 Authoring application: Cekanepeqiqo

MD5: 4718202ba8e32415acb2b4d170a125c6 SHA-1: ada3ba4254cf21049b4f8bb549df2b94bb6ffc93 SHA-256: e2c977638b86fd02f7a899af4481e1623a3472dd28a5dd4b39123d3acac02f81

258 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File T1059.001 Command and Scripting Interpreter: PowerShell T1059.007 Command and Scripting Interpreter: JavaScript

The sample is a PDF file that exploits several known vulnerabilities including CVE-2009-4324, CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. These exploits are used to execute XOR-decoded JavaScript embedded within the document. The deobfuscated JavaScript is likely responsible for downloading and executing a second-stage payload, which is a common technique for malware delivery.

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_obj0018_000.js` `f3927b957ff57fa523181d6e44cbd0c6589308e936f0bfa3b49f17e53d32abda`	pdf-javascript-stream	PDF /JS object 18 at offset 0x2618	284219 bytes
`page_word_xor_stage_000.js` `71d81fcaead7c494d3bf949429cafadfec5c94eac9431aff0d2c6b5d1685f716`	deobfuscated-js	page-word XOR decoded JavaScript (decompressed, key=0xF3) at offset 0x9A1	3213 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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