PDF malware analysis — malicious · 23426298afdd6f54

MALICIOUS

PDF

4.6 KB

MD5: 8012753256306a6ad5ecbcdf797efe5f SHA-1: 495aa6076d2a855c65771261f0252b0e869549b4 SHA-256: 23426298afdd6f540a56ba3552275e10dc5f400b36889036a8ce2c7641848f3e

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious JavaScript

The PDF file contains obfuscated JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The PDF_U3D_CVE_RELATED heuristic suggests exploitation of a vulnerability related to 3D content parsing in Adobe Reader. The embedded JavaScript, extracted as javascript_obj0001_000.js, is likely responsible for executing the exploit and potentially downloading a second-stage payload. ClamAV also flagged this file as Heuristics.PDF.ObfuscatedNameObject.

Heuristics 6

U3D/3D content in PDF — Adobe Reader 3D parser CVE-family indicator high CVE related PDF_U3D_CVE_RELATED

PDF contains U3D (Universal 3D) or 3D annotation content — CVE-2011-2462 and CVE-2009-3953 are critical vulnerabilities in Adobe Reader's U3D processing that allow arbitrary code execution. U3D content in PDFs is extremely rare in normal documents.
ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0001_000.js` `ea9ba557f96d1b11950d79ce08ed619ef4485e1364ce54a557e450d31b776e1f`	pdf-javascript-stream	PDF /JS object 1 at offset 0xF	2761 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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