PDF malware analysis — malicious · c00d2b971df8d023

MALICIOUS

PDF

5.7 KB

MD5: 3706718d241110ecc2a5443ad655a132 SHA-1: acc7aa439f94e1b0325878313f9d68c2c95eac22 SHA-256: c00d2b971df8d023fa46cba639b9f8e843ace4b325ff4eed0a256ad31fcdc76b

158 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. A critical heuristic, PDF_U3D_CVE_RELATED, points to a potential exploit targeting Adobe Reader's 3D content parsing capabilities. The embedded JavaScript, particularly the larger javascript_obj0001_000.js, is likely responsible for executing the exploit, leading to further malicious activity. The ClamAV detection of Heuristics.PDF.ObfuscatedNameObject further supports the malicious nature of the file.

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` `d885415b8ed9b940fa1ff23ecf8d24a40f500ec3c492220efafd99041ab0a1c3`	pdf-javascript-stream	PDF /JS object 1 at offset 0xF	3737 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 0x1047	58 bytes

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