PDF malware analysis — malicious · 7ef52a14decc903b

MALICIOUS

PDF

6.3 KB

MD5: 3ab052e2d4d89ceb1e810ab8b99d8e50 SHA-1: 24ca91f2a4597165c817e93bbf69b7ee94ed3379 SHA-256: 7ef52a14decc903b63aac8d3eaf3583aa419991ec84550f3301d01fa803a37ef

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 a PDF_U3D_CVE_RELATED heuristic suggests exploitation of a vulnerability related to Adobe Reader's 3D content parsing. The JavaScript stream is obfuscated, as evidenced by the PDF_UNESCAPE firing and the CLAMAV_DETECTION for ObfuscatedNameObject. The primary function of the script appears to be obfuscation and potential payload delivery, though the exact nature of the payload is not discernible from the provided evidence. The reconstructed IOC 'unescape()' is a key indicator of obfuscation techniques used within the script.

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` `9711ae2d1748d62dd217d4ae40d4087365a24aea599914b1031f02fae4364023`	pdf-javascript-stream	PDF /JS object 1 at offset 0xF	4380 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 0x12E2	58 bytes

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