PDF malware analysis — malicious · eb326d0a8fb567b7

MALICIOUS

PDF

45.8 KB

MD5: c13b2135160267b6adb55b4a31c3d80a SHA-1: 86a58fccb8333cea13d1ca491863f7339ffab7e2 SHA-256: eb326d0a8fb567b768daa8d265c4287ba2ec7cefb37bd3ed30bbbfbf15715a75

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell T1204.002 Malicious File: User Execution: Malicious File T1059.007 Command and Scripting Interpreter: JavaScript/JScript

The PDF file contains obfuscated JavaScript that exploits the CVE-2009-0927 vulnerability in Adobe Reader. The script decodes and executes a second-stage payload, likely for further malicious activity. The exploit targets a known vulnerability in PDF rendering.

Heuristics 5

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)
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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_obj0008_000.js` `b6392444cedf1065a1f5a7ed8fcfbdd29a4cfb1110b6b27644b3d07c29d44068`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9215 bytes
`custom_b64_stage_000.js` `9663953e0ec12ff343b37649a3d8c1a7fab7bfec193731f9eeec9bd4fc8fda89`	deobfuscated-js	custom Base64 decoded JavaScript layer 2 (PDF /JS object 8) at offset 0x8A7	1517 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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