Malicious PDF — malware analysis report

Static analysis result for SHA-256 00247427e73ebb58…

MALICIOUS

PDF

24.7 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)
MD5: 7ca1bab1d994f96eac5aab388efbec2c SHA-1: 3e919118108f125562e9a16f971863cf1946cda8 SHA-256: 00247427e73ebb58f5b2d568115def1a0f61a24266b5c0ea05860455d87902ec
148 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript T1204.002 Malicious JavaScript

This PDF file contains embedded JavaScript that utilizes an eval() function, a common technique for executing obfuscated or dynamically generated code. The heuristics indicate a PDF JavaScript exploit cluster, strongly suggesting the script is designed to download and execute a secondary malicious payload. The ML classifier also flagged this PDF as highly malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER
    PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution
  • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0013_000.js
7cf87a44c58a33c992de119212e920e26f526496360e81a5b5015cc5a94b9a3b
pdf-javascript-stream PDF /JS object 13 at offset 0x336 23690 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).