PDF malware analysis — malicious · fb56d546898f7b68

MALICIOUS

PDF

4.4 KB

MD5: 2a969a399cbc60b7e6f689e888220afa SHA-1: 4681d95fa52e3d3385964dc25d390734d9bd422a SHA-256: fb56d546898f7b688c532e7770355960566de6c7fe64663566323e92356f4811

320 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded JavaScript and triggers multiple critical heuristics related to known Adobe Reader exploits (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659, CVE-2008-2992). These exploits are designed to execute arbitrary code, indicated by the 'media.newPlayer', 'Collab.getIcon', 'Collab.collectEmailInfo', and 'util.printf' functions. The ClamAV detection 'Pdf.Exploit.Agent-36895' further confirms its malicious nature. The primary attack vector appears to be leveraging these vulnerabilities to run embedded JavaScript, which is likely responsible for downloading and executing a secondary malicious payload.

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)
ClamAV: Pdf.Exploit.Agent-36895 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36895
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_obj0014_000.js` `8f33a2d3d6ab034e07ad5885af340d0669cae88acefb92a2c07a01d4a48970a9`	pdf-javascript-stream	PDF /JS object 14 at offset 0xE2D	716 bytes
`info_stride_js_000.js` `b7a1d933663c335236aaf9a8bad5f1dfa5e8b40b36066dbc53fff38c1fbdfd85`	deobfuscated-js	PDF /Info fields via stride 6	4578 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 12 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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