PDF malware analysis — malicious · 19ccc89915ffeae1

MALICIOUS

PDF

8.7 KB Created: 2010-02-19 20:21:09 Authoring application: Nofediqauikizazikicwafoda

MD5: 23fe9f058b82d1b2705932fffef0ef48 SHA-1: 1909128568c223b5134043637c0b78a20dc592c9 SHA-256: 19ccc89915ffeae1e81d24cd71d4e758db961e91ee94f6577390885cf5c72cbd

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 PDF JavaScript execution. Specifically, it leverages page-word XOR decoded JavaScript triggered by the OpenAction, which is a common technique for delivering malicious payloads. The obfuscated JavaScript streams extracted from the document are indicative of an attempt to hide malicious code, likely for downloading and executing further stages. The document body contains seemingly random text and names, suggesting it's a lure rather than legitimate content.

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` `21b234623c80efd76b2c655ec4b27b9e6b50741f392f01d9b76d0b46604728ef`	pdf-javascript-stream	PDF /JS object 13 at offset 0x1D9A	701 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=0xA7) at offset 0xAB4	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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