PDF malware analysis — malicious · c2697ba6c9fef429

MALICIOUS

PDF

6.0 KB

MD5: 710ea6215d3b95726c5d3bfc33cc5535 SHA-1: 7e254280d448f0daa3b11948fedb3b9d88c85d1d SHA-256: c2697ba6c9fef429158d30293ed53cc6b60ea03cccfdbc927b4966e0a9b8d59a

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript streams, with one stream being particularly large and obfuscated, indicated by the `unescape()` call and `ObfuscatedNameObject` heuristic. The presence of U3D content and the `PDF_U3D_CVE_RELATED` heuristic suggest an exploit targeting Adobe Reader 3D parser vulnerabilities. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload.

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.
ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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` `956f7ef219afdd39cf78064e569cabe7d584758ee7f4603a9dbd90ffc6fe00ca`	pdf-javascript-stream	PDF /JS object 1 at offset 0xF	4087 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 0x11B2	58 bytes

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