PDF malware analysis — malicious · 599d3a36d8c6b96f

MALICIOUS

PDF

45.8 KB

MD5: 6c92f3727bf1c22e0ecb7aac85e1007d SHA-1: da18d19ea62bad59ef98ca483833702c0eee9c0f SHA-256: 599d3a36d8c6b96feb0e92c45bf34996cca9d45bd040ece564854a947d0ecbb1

136 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File T1027 Obfuscated Files or Information

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 targeting Adobe Reader. This indicates a downloader or dropper functionality designed to fetch and run additional malicious content.

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` `f13e4ed675c1e1427de3237f2a3e3f3df90be4b52589ef7e070f6dbd9546e444`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9215 bytes
`custom_b64_stage_000.js` `937bec0ceb089f7fdc9759e1108a33145c94567c062fecb90edf96284bb8cf2a`	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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