PDF malware analysis — malicious · 8d8af998d8f6bf60

MALICIOUS

PDF

45.9 KB

MD5: 8aa957440c7b454d3267c46b1663e001 SHA-1: b863ba2a571f046a25922ab43c842cfaa42379fe SHA-256: 8d8af998d8f6bf602a9e7a81f6217ad87964bba0d2158e562b6aabb15296f0c8

98 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript that leverages the CVE-2009-0927 vulnerability in Adobe Reader, specifically targeting the Collab.getIcon function. The JavaScript is obfuscated and decodes further layers, ultimately aiming to execute an exploit stage. This indicates a malicious document designed for exploitation.

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` `7df6640ca49056009f233199f5dd50195770f3fbe69285d0cc300c26bbfed6f3`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9243 bytes
`custom_b64_stage_000.js` `5c21935b71c5c62716080635b057920483317c38f21f8cd9f410c4a3242d889e`	deobfuscated-js	custom Base64 decoded JavaScript layer 2 (PDF /JS object 8) at offset 0x8A7	1523 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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