PDF malware analysis — malicious · 92a5f40f06a13a73

MALICIOUS

PDF

4.6 KB

MD5: 1b7ddfdeeab22a699d202d31fc7640d9 SHA-1: fb5239ac4b6de1977d59bae398ba160ae9e36da3 SHA-256: 92a5f40f06a13a73f8a1843f871f415f460624d54f5ad66a1966784e6139c5ea

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS heuristics. The PDF_U3D_CVE_RELATED heuristic suggests exploitation of a vulnerability related to Adobe Reader's 3D content parsing. The embedded JavaScript, identified as javascript_obj0001_000.js, is likely responsible for executing the exploit. ClamAV also flagged the file as Heuristics.PDF.ObfuscatedNameObject, further supporting its malicious nature. The exact exploit and payload are not fully discernible due to obfuscation, but the overall pattern points to a PDF-based exploit delivery.

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` `fe3bd5025ac25a63c775f284d3b06c02c4f45fe5d757abbf7880d0f75adb670f`	pdf-javascript-stream	PDF /JS object 1 at offset 0xF	2844 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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