PDF malware analysis — malicious · 1bb0f86051bd9e09

MALICIOUS

PDF

10.7 KB Created: 2010-02-17 18:51:02 Authoring application: Saqmosiwaneho

MD5: 6322407d8f5883385c72e133ffa98c72 SHA-1: e636280180ab581527d1fc9bca6995c4b87c6165 SHA-256: 1bb0f86051bd9e098a748fee82d3fbf42e398a6fee9d7d679e31d2a7731bbabd

298 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains multiple critical heuristic firings indicating the exploitation of several CVEs related to JavaScript execution within PDF documents. Specifically, it leverages CVE-2009-4324, CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. The 'OpenAction' trigger and embedded JavaScript streams, further deobfuscated into 'page_word_xor_stage_000.js', confirm that the document is designed to execute malicious code automatically when opened. The exact payload and its ultimate goal could not be determined due to the obfuscation and lack of further extracted artifacts.

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` `b0e0f724a282426c7667c7eb8b99302b32c36d346c85c829ea8abdcdc29d183a`	pdf-javascript-stream	PDF /JS object 15 at offset 0x252B	702 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=0x09) at offset 0xC15	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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