PDF malware analysis — malicious · 55e33e59c0817c4b

MALICIOUS

PDF

6.3 KB

MD5: 6a4394e4c0a53d5a74ff106f57b6e510 SHA-1: bab715100d726c8e3490e68b49a1948203141dfc SHA-256: 55e33e59c0817c4bcb9f68605cf7d7e76dd161bc22c0fa1f6f67d792ee4c0858

126 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript and U3D content, with heuristics indicating a potential exploit related to Adobe Reader's 3D parsing (CVE-family). The embedded JavaScript stream, named 'javascript_obj0015_000.js', is likely responsible for executing the malicious payload. The unescape() call and ASCIIHexDecode filter further suggest obfuscation and exploit delivery. The overall pattern points to a malicious document designed to leverage a specific vulnerability for code execution.

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` `f8c2edf4f86ca623d3bad309e7cfb319147bad6693efd0da6c7d3a9452d07b0d`	pdf-javascript-stream	PDF /JS object 15 at offset 0x7D6	4179 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).
`u3d_00_off000003cb.bin` `db47f9e6c2fa22cca9aaaaba842bc1035f54c0acd3737dbd64b69dc1671da5eb`	pdf-3d-stream	PDF U3D 3D stream at offset 0x3CB	1268 bytes

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