PDF malware analysis — malicious · fad74beddc2c7e33

MALICIOUS

PDF

45.8 KB

MD5: 4ec44e87e14194fce7c340e006654789 SHA-1: 52ba43995fb80a457feaf8123dbf6ac2964eaf27 SHA-256: fad74beddc2c7e33bc4c35b33dc3a3770968e0205ab2db9bae19edec40693386

136 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 exploits CVE-2009-0927 using the Collab.getIcon method. The JavaScript is obfuscated and decodes multiple layers, ultimately executing an exploit stage. This indicates the file is designed to compromise the user's system by leveraging a known vulnerability in Adobe Reader.

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)
Suspicious extracted artifact high 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.
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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `9dd7061bce5052c8852ecf10d6c4654f2fd55760ca87be6eb642e0379d6e95b7`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9215 bytes
`custom_b64_stage_000.js` `7bc8be0c1df04760f9fdd994eeca94476d67aa0ee6d4a24331790e555ac991fa`	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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