PDF malware analysis — malicious · 4e8217cb4af29aaf

MALICIOUS

PDF

4.2 KB

MD5: 14be51325a127fbdc876c7418874593d SHA-1: d487b0671c94b4e583b623e60a9f323be0b32456 SHA-256: 4e8217cb4af29aaf7a0761302cc891c4ea7350337d03ba80907f0aee79443a5c

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical ClamAV detection and the PDF_U3D_CVE_RELATED heuristic suggest exploitation of a vulnerability, likely within Adobe Reader's 3D parsing capabilities. The embedded JavaScript, named 'javascript_obj0001_000.js', is the primary artifact for further analysis and is suspected to download and execute a second-stage payload.

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` `1e2d3f92be121acbb5f66f5a87c622b27a8cd35ad2a54b3832c575b64ac5b873`	pdf-javascript-stream	PDF /JS object 1 at offset 0xF	2446 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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