PDF malware analysis — malicious · 1d2507c55d61fcce

MALICIOUS

PDF

46.4 KB

MD5: 2bb09b5510dbd575bad8fe9a34db8320 SHA-1: bf3543dc0f5e5aaa15d870cb8d359ecb342d5620 SHA-256: 1d2507c55d61fcce2ac36196d6d163a651041ee2e1ab133a23fbaf7d4286c0c3

100 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell T1204.002 Malicious File Execution: User Execution: Malicious File T1059.007 Command and Scripting Interpreter: JavaScript

The PDF file contains embedded JavaScript that utilizes the Collab.getIcon method to exploit CVE-2009-0927 in Adobe Reader. The JavaScript is obfuscated and decodes a second-stage payload, which is then likely executed. This indicates a downloader or exploit delivery mechanism.

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` `d2dcda8a05568d5ecf6112cf5606ab29e2b8284231776e7ec91b311580d1d76a`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9339 bytes
`custom_b64_stage_000.js` `cddc42b41955b8f39990340596445764315d7b9c6b53374ff80cc2519678806a`	deobfuscated-js	custom Base64 decoded JavaScript layer 2 (PDF /JS object 8) at offset 0x8A7	1547 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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