PDF malware analysis — malicious · bac005823480f3b9

MALICIOUS

PDF

5.9 KB

MD5: 3a1f9f19926d8c31e3305a7a417b5d19 SHA-1: acc8cc0abe93e4b9611e538daad721fe82aa5266 SHA-256: bac005823480f3b9b9cc35cad40ad5ca8df6e8150ac462c235ab824cd5207bbf

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious JavaScript

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical ClamAV detection and the PDF_U3D_CVE_RELATED heuristic suggest exploitation of a vulnerability related to 3D content parsing in Adobe Reader. The embedded JavaScript streams, particularly 'javascript_obj0001_000.js', are likely responsible for executing the exploit payload. The obfuscated nature of the JavaScript and the specific CVE-related indicator point towards a malicious intent to compromise the user's system.

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` `aeb1ee610b9ab8d6ff25755d9148049680bb63eb944b1f395807a94d200f0ce8`	pdf-javascript-stream	PDF /JS object 1 at offset 0xF	3926 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 0x10FD	58 bytes

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