PDF malware analysis — malicious · ca9522fd4221b6ad

MALICIOUS

PDF

45.4 KB

MD5: fba0d9a513004e5deab0c54ffe406c2f SHA-1: 81ee5cee3ae595ec1aefe74e0861efa792c7e361 SHA-256: ca9522fd4221b6ad7f7840168da7634f2d7baaed32f290f6c4462bd164cbb2f6

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 appears to decode further layers before execution, indicating a downloader or initial access stage. The primary technique observed is the exploitation of a known vulnerability through malicious JavaScript.

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` `d2068c741a6822a88214db4a8bb5bc4b13db929f6099e3cf816986da2ac81e36`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9143 bytes
`custom_b64_stage_000.js` `cb8c4908eda0de5b2f11419d09465514da3375f172c0b33681c02477c96d2c5f`	deobfuscated-js	custom Base64 decoded JavaScript layer 2 (PDF /JS object 8) at offset 0x8A7	1499 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.