PDF malware analysis — malicious · ceefb6cfbd59c7ed

MALICIOUS

PDF

45.6 KB

MD5: e0ec29643b59c37e2f945ef003593b2a SHA-1: 6ce45fbbe696b616d004f810c201581003f85326 SHA-256: ceefb6cfbd59c7ed2e91bd3afa0cc271fe080f0edb2e81b7adc84d3dcc0de79b

100 Risk Score

Malware Insights

MITRE ATT&CK

T1204.001 Malicious File: Malicious File T1027 Obfuscated Files or Information: Obfuscated Files or Information

The PDF file contains embedded JavaScript that is obfuscated and likely exploits CVE-2009-0927 (Collab.getIcon) in Adobe Reader. The JavaScript is further layered and decodes a second stage payload, indicating it's designed to download and execute further malicious content. The primary IOC is the vulnerability exploited.

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` `88369e65805272a21ec420ae4e8ff76142d6922c402b2acb7af04d29eea930bf`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9187 bytes
`custom_b64_stage_000.js` `2d19bb7bcea67f49468f7a047fa8f3b0d488fff27b30cecddf4af8b65b64ca1a`	deobfuscated-js	custom Base64 decoded JavaScript layer 2 (PDF /JS object 8) at offset 0x8A7	1511 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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