PDF malware analysis — malicious · aa1e677084f1a239

MALICIOUS

PDF

45.8 KB

MD5: 09bc11582f328a746b0c0d57aa3e5862 SHA-1: 4fd0546eb00d32b7712fb135b474de20f89c1b9f SHA-256: aa1e677084f1a2394fea92284e338c18dacfc75ee0deff8b369dd1fbd9481abd

98 Risk Score

Malware Insights

MITRE ATT&CK

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

This PDF file contains embedded JavaScript that exploits the CVE-2009-0927 vulnerability in Adobe Reader via the Collab.getIcon method. The JavaScript is obfuscated and decodes multiple layers to execute the exploit stage. The primary goal appears to be the download and execution of a secondary payload.

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` `4192c82d30d2dea33705e34f4187e454a1baf9ca0d7fc85e2ba0e6dc83312bbc`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9215 bytes
`custom_b64_stage_000.js` `a656984daf112c8441e78b3e62561c19593f8b20fa187d459245a8eca6159e0d`	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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