PDF malware analysis — malicious · fbe7c7ace0db0e33

MALICIOUS

PDF

6.0 KB

MD5: 7adf4619afec86216ac0706a47a02e9a SHA-1: 2c6ea17d6b1362856ae17a7c2e3fc29b9f2d7957 SHA-256: fbe7c7ace0db0e33ef2a47a85ed9c520bfef062abef014d44cb549e9690b9992

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The presence of U3D content and a CVE-related indicator (PDF_U3D_CVE_RELATED) suggests exploitation of a vulnerability in Adobe Reader's 3D parsing. The ClamAV detection (Heuristics.PDF.ObfuscatedNameObject) further confirms malicious intent. The embedded JavaScript streams, named javascript_obj0001_000.js and javascript_obj0002_001.js, are the likely mechanism for delivering the malicious 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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0001_000.js` `5f9b0291bb8d3e89e1a0150cb8960494f4856a8e955d58cd1bd3e3e69dbdf661`	pdf-javascript-stream	PDF /JS object 1 at offset 0xF	4026 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 6 eval/decoder/string-building token(s).
`javascript_obj0002_001.js` `53ef3e86395c29047481d41061937b32759780f8b45be9739a0a576f50df45b1`	pdf-javascript-stream	PDF /JS object 2 at offset 0x118C	58 bytes

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