PDF malware analysis — malicious · 9aea964d0cfee4da

MALICIOUS

PDF

87.2 KB

MD5: 96db41c09943f5b58a20eb195f201198 SHA-1: 1229d32898858d47a0c07de43700857d5d9a4059 SHA-256: 9aea964d0cfee4da81c2707c5a403d207669882d5d2bdc41b0d7a56d385243a0

156 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains embedded JavaScript and U3D content, with heuristics indicating a high likelihood of exploitation related to Adobe Reader 3D parsing vulnerabilities (CVE-family). The ML classifier strongly flagged this PDF as malicious. The embedded JavaScript, identified as 'javascript_obj0015_000.js', is likely responsible for executing the malicious payload, potentially downloading further stages or exploiting the identified vulnerability. The presence of U3D content further supports the attack vector targeting 3D rendering features.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 7

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)
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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` `c16f26e30d58dd05ffcaf1a5c4388c3794542f716c3470e296373461e31d493f`	pdf-javascript-stream	PDF /JS object 15 at offset 0x14677	10948 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_off00000405.bin` `db47f9e6c2fa22cca9aaaaba842bc1035f54c0acd3737dbd64b69dc1671da5eb`	pdf-3d-stream	PDF U3D 3D stream at offset 0x405	1268 bytes

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