PDF malware analysis — malicious · 3b21e2c87de9d5b0

MALICIOUS

PDF

47.4 KB

MD5: c37605486b409309ff7904a454d8c043 SHA-1: c5c9456b7eb822c167aa32a9622e1dfebc1bb7c7 SHA-256: 3b21e2c87de9d5b0caab46de7708cd4485b32990ef2a5572b1cbb06b048d368b

98 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1059.001 PowerShell

The PDF document contains embedded JavaScript that is obfuscated and decodes further layers of malicious code. This JavaScript is designed to exploit the CVE-2009-0927 vulnerability in Adobe Reader, likely to download and execute a secondary payload. The use of obfuscated JavaScript and exploit techniques points to a malicious downloader.

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` `38a3381f174d6fbbbd0cbefab9edd0d235e9e34515e85361adbb3ba7442fbd6f`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9543 bytes
`custom_b64_stage_000.js` `8bdb4ac36718bea52f1de5ec1cd56468fd05c433b402543f68d8136a409bf3aa`	deobfuscated-js	custom Base64 decoded JavaScript layer 2 (PDF /JS object 8) at offset 0x8A7	1595 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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