PDF malware analysis — malicious · a8e70d01d66d1ee2

MALICIOUS

PDF

46.0 KB

MD5: aba7ef7da4c385058d78a9f495c7c2a3 SHA-1: b136ad26fcdcc389a96f8f5b1ac97bed6713f6cf SHA-256: a8e70d01d66d1ee23e77a9d6c1b3217c99fafba9ddda4f457a3e3d56169c6456

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell T1204.002 Malicious File Execution: Malicious 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 layer of code, which is then executed. This indicates the file's primary purpose is to leverage this vulnerability to download and run a malicious payload.

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` `cc035d349fd45190c93b9a73f5357650c331788f1273e0c8a529b24e1d564f91`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9263 bytes
`custom_b64_stage_000.js` `2574efb33b6d84146d621e88e5bda2367e260633dbdc841c3d7581d81cd5ecca`	deobfuscated-js	custom Base64 decoded JavaScript layer 2 (PDF /JS object 8) at offset 0x8A7	1529 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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