PDF malware analysis — malicious · 205c14b5d4bf12fe

MALICIOUS

PDF

5.1 KB

MD5: 960f8f32b9bad1600446bb25ee0203bc SHA-1: 570a63a61e5b0b6782dc24934067944e5a73862d SHA-256: 205c14b5d4bf12fe96b398cb25bd4ac1c207ad09abcdf2e2d9c70d3904fd65d4

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 critical ClamAV detection and the high-severity PDF_U3D_CVE_RELATED heuristic suggest exploitation of a vulnerability related to Adobe Reader's 3D content parsing. The embedded JavaScript, extracted as 'javascript_obj0001_000.js', is likely responsible for executing the malicious payload, potentially leading to further compromise.

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` `a012ba91bc9e49ee139cd0a03a0b5880e23149c17ad59247069576989d7d1735`	pdf-javascript-stream	PDF /JS object 1 at offset 0xF	3303 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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