PDF malware analysis — malicious · 229b3cc848f9220f

MALICIOUS

PDF

45.3 KB

MD5: 9dc24ea8eb5eab590bb299158750369a SHA-1: 3d8785fe76a7171f1344bde7e145a4461e094d1e SHA-256: 229b3cc848f9220f6f27301a07f4defcc9277e4340e2177cdb1a1275609b093c

98 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript that leverages the CVE-2009-0927 vulnerability (Collab.getIcon) to execute a malicious payload. The JavaScript is obfuscated and decodes further layers, ultimately aiming to exploit Adobe Reader. The primary IOC is the CVE identifier itself, indicating the specific exploit used.

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` `fbc1d1da7b1cd99f72168af7b9d8cd306d13199e8181d21a8f6cc0186f2ff16c`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9115 bytes
`custom_b64_stage_000.js` `d88b248fbd9aebce4603bdea744cbc6fcfe405d6c6128d0ad746fd0a7e4f326d`	deobfuscated-js	custom Base64 decoded JavaScript layer 2 (PDF /JS object 8) at offset 0x8A7	1493 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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