PDF malware analysis — malicious · 912f5eb09ee96c6d

MALICIOUS

PDF

267.0 KB

MD5: 4e7b52cc2920d5dd0b6827b7d27237b2 SHA-1: bdc48a0e0ee77e01f32cb0c3d6e1b819574628c1 SHA-256: 912f5eb09ee96c6db108587e8ab0c8702bcc92208498ccb13e8b916e93b87121

126 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains embedded JavaScript and a U3D 3D content stream, with heuristics indicating potential exploitation of Adobe Reader's 3D parser (CVE-family). The JavaScript stream, identified as 'javascript_obj0015_000.js', is likely responsible for executing the malicious payload. The presence of 'unescape()' and 'ASCIIHexDecode' further suggests obfuscation techniques used to hide malicious code. The overall attack pattern points to a document-based exploit leveraging a known vulnerability.

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` `8ab855865d9d76fe0ae0a74b2039492241f0f82c886e002081348e27c6f68212`	pdf-javascript-stream	PDF /JS object 15 at offset 0x415DC	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_off00000402.bin` `db47f9e6c2fa22cca9aaaaba842bc1035f54c0acd3737dbd64b69dc1671da5eb`	pdf-3d-stream	PDF U3D 3D stream at offset 0x402	1268 bytes

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