PDF malware analysis — malicious · 97ba0adb27e12ca5

MALICIOUS

PDF

7.9 KB Created: 2010-02-20 12:35:56 Authoring application: Wenirihadeqofafisa

MD5: baaa69c181cc25a01bd986f317f348a9 SHA-1: 4232e9512f1928199166f793e608eccf28efd9b1 SHA-256: 97ba0adb27e12ca50231c9db5b05bef9d115e4d009fa5968d9f6197c141612af

298 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF document contains multiple critical heuristic firings indicating the exploitation of several CVEs related to JavaScript execution within PDFs. Specifically, it leverages page-word XOR decoding to execute obfuscated JavaScript, a common technique for delivering malicious payloads. The presence of multiple exploit-related firings strongly suggests an attack pattern aimed at compromising the user's system through the PDF viewer. No specific family could be identified, but the exploitation method is clear.

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_obj0013_000.js` `d4027ecc81a652653200b05626dd0e4097742f0d577bb22c092a981064ec5ff8`	pdf-javascript-stream	PDF /JS object 13 at offset 0x1B49	713 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`page_word_xor_stage_000.js` `e5d4a8f50dad8631121c2fb11acc5f298c3b1e7246807b6f7b690f49eb28b3b8`	deobfuscated-js	page-word XOR decoded JavaScript (decompressed, key=0xF3) at offset 0xA3A	3211 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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