PDF malware analysis — malicious · a19dfeee25ce5813

MALICIOUS

PDF

9.2 KB Created: 2010-06-17 13:34:45 Authoring application: Meramafexaue (via 6757aLerinolatarhe)

MD5: 135664fc2dfc83406e15ad2d063446da SHA-1: b5599b38c7ebc965e13a67d59ff8aca4cfb0cda1 SHA-256: a19dfeee25ce58133941c989b43d72cab3daf06a63a6b0e04fb36cea03ec52df

298 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1059.007 JavaScript

This PDF file exploits multiple known Adobe Reader vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659, CVE-2008-2992) via XOR-decoded JavaScript embedded within the document. The 'OpenAction' trigger and the presence of deobfuscated JavaScript indicate that the primary intent is to execute arbitrary code. The script likely downloads and executes a second-stage payload, though the exact nature of the payload could not be determined 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_obj0015_000.js` `30ab7e5d2093f6a8d91125ab8963eb699aef7bc8b2433b9c0a5bc2d83f8bb7b7`	pdf-javascript-stream	PDF /JS object 15 at offset 0x170B	3966 bytes
`page_word_xor_stage_000.js` `8791caee3d32792d41fa0aa4fd3c6623f622ea4e3963c5b4d710e61f3a0bc69e`	deobfuscated-js	page-word XOR decoded JavaScript (decompressed, key=0x88) at offset 0x413	3326 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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