PDF malware analysis — malicious · 8dd504937e37b78c

MALICIOUS

PDF

5.9 KB

MD5: 289cf79b79a2a8887bd6a1066f382510 SHA-1: ebeebc8e3ce9639845974ac26196b48a5f8c9d34 SHA-256: 8dd504937e37b78c8229e994bed967df72c4b209e9cba67404c0d001b06cba4b

248 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.001 Malicious Link

This PDF file contains embedded JavaScript and U3D content, triggering critical heuristics for CVE-2011-2462, a known heap spray exploit in Adobe Reader's U3D parser. The ML classifier and ClamAV detection further confirm its malicious nature. The embedded JavaScript is likely responsible for executing the exploit and potentially downloading a second-stage payload, as indicated by the 'Pdf.Dropper.Agent-7281454-0' ClamAV signature.

Machine Learning

Nyx PDF Classifier malicious score 0.9961

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: Pdf.Dropper.Agent-7281454-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7281454-0
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` `3ced708e6cb94bc80221ffb08893d7b8085c523bf348274c232b5a56366e912c`	pdf-javascript-stream	PDF /JS object 1 at offset 0xF	3961 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 0x10EB	58 bytes

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