PDF / .TMP malware analysis — malicious · ee133b173d854d7a

MALICIOUS

PDF / .TMP

11.1 KB Created: 2010-02-24 18:18:49 Authoring application: Cobahasogoreponifida (via Ximaxotokike)

MD5: 6891bb38f8723eddcb14407a05c0a13d SHA-1: 0c61d5db43cd50cd9e051f5a61b56bdfda9457cf SHA-256: ee133b173d854d7add04aea2436cec8fa1f05b91cc58ce11b2dc558de26b6185

258 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF document contains multiple critical heuristic firings indicating exploitation of several CVEs (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659, CVE-2008-2992) through XOR-decoded JavaScript embedded within the document. This JavaScript is further obfuscated and likely serves to download and execute a second-stage payload. The specific exploits and obfuscated JavaScript indicate a malicious intent to compromise the user's system.

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` `f4c2956244e3d3512550275a40f4d9a47eff1ca69f9f66aefbc5b69d58828953`	pdf-javascript-stream	PDF /JS object 18 at offset 0x20FD	280019 bytes
`page_word_xor_stage_000.js` `71d81fcaead7c494d3bf949429cafadfec5c94eac9431aff0d2c6b5d1685f716`	deobfuscated-js	page-word XOR decoded JavaScript (decompressed, key=0x6B) at offset 0x865	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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