PDF malware analysis — malicious · 914812810e2a68fd

MALICIOUS

PDF

5.6 KB

MD5: 1e4c1c7d5115e7361c5c2d390310f9ce SHA-1: 64e4eeb93222a0e73731bace9b6cf8b9eb690b12 SHA-256: 914812810e2a68fdd2ada06c8c9a95d0d2f399ed56737ca4cbf26841a2af606b

136 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: PowerShell

This PDF file contains embedded JavaScript and U3D content, triggering heuristics related to known Adobe Reader vulnerabilities (CVE-family). The embedded JavaScript, identified as 'javascript_obj0015_000.js', is likely responsible for exploiting the U3D vulnerability to achieve arbitrary code execution. The ML classifier strongly indicates malicious intent. The primary attack vector appears to be leveraging a specific vulnerability in PDF rendering.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.
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.
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
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_obj0015_000.js` `cc7e45319e0ff170208ff1408ac7d315a0ca93802dee292ee46f51a099fee5d5`	pdf-javascript-stream	PDF /JS object 15 at offset 0x7D0	9932 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`u3d_00_off0000035e.bin` `db47f9e6c2fa22cca9aaaaba842bc1035f54c0acd3737dbd64b69dc1671da5eb`	pdf-3d-stream	PDF U3D 3D stream at offset 0x35E	1268 bytes

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