PDF malware analysis — malicious · 7f5e88caf3171d33

MALICIOUS

PDF

5.5 KB

MD5: e2ff7190396b4e3abd44e043bedbbb53 SHA-1: 5c9cb9532c355ff19baf2f8e992c3dcb2b4f3559 SHA-256: 7f5e88caf3171d33496d485cf98d701734ac8cf2f0f59ca6af7322f602e66080

248 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1203 Exploitation for Client Execution

The PDF contains U3D content and embedded JavaScript, triggering critical heuristics for CVE-2011-2462, a known heap spray exploit targeting Adobe Reader's U3D parser. The embedded JavaScript is likely responsible for the heap spray and subsequent code execution. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.8262

Heuristics 7

Adobe Reader U3D parser exploit with JavaScript heap spray critical CVE likely CVE_2011_2462_U3D_HEAPSPRAY

PDF combines U3D/3D annotation content with JavaScript heap-spray shellcode. Public CVE-2011-2462 exploit chains use a crafted U3D stream and JavaScript heap spray to control memory during Adobe Reader's U3D parser corruption.
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` `364cc01db31a60c622a849be5c94dbed1dd62ab95b1febedb71a035308eeee0c`	pdf-javascript-stream	PDF /JS object 1 at offset 0xF	3483 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 6 eval/decoder/string-building token(s).
`javascript_obj0002_001.js` `ac9245d748e7972e25091c1d18299b92e3e2339ab7e73e59ebe47ccc40b8c943`	pdf-javascript-stream	PDF /JS object 2 at offset 0xF6B	58 bytes

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