PDF malware analysis — malicious · b130586d8a9ffdae

MALICIOUS

PDF

47.4 KB

MD5: 440c18abeea202dd662d1ea5c4277428 SHA-1: e5d18913e10ae4eb18689a3d0604257fb537f8ce SHA-256: b130586d8a9ffdae608fc2fc23f9400c46b17dae2939b47b2817338facf12e8a

136 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious File Execution

The PDF file contains embedded JavaScript that leverages the CVE-2009-0927 vulnerability in Adobe Reader. The JavaScript is obfuscated and appears to be a multi-stage loader designed to download and execute a second-stage payload. The critical heuristic specifically identifies the Collab.getIcon method as part of the exploit chain.

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` `b89aa0dd2a072b988b7166e84ab659af20b6dd3c33d42552349af96daaf84c07`	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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