Malicious PDF — malware analysis report

Static analysis result for SHA-256 f95b2861e15e17ea…

MALICIOUS

PDF

56.0 KB Created: 2009-07-11 08:11:56 Authoring application: Scribus 1.3.3.13 (via Scribus PDF Library 1.3.3.13)
MD5: 8c06055f2c058e82b338a6401957fcce SHA-1: 958e57eeaa47f679e932203c50dfcc9da0716bdb SHA-256: f95b2861e15e17eadfc05b69308ada9df27bb9735f3b14411e4bf3fc26ab81e3
78 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded JavaScript streams, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection 'Heuristics.PDF.ObfuscatedNameObject' further suggests malicious intent. The presence of multiple JavaScript files (javascript_obj0034_000.js, javascript_obj0035_001.js, javascript_obj0036_002.js) strongly implies that the PDF is designed to execute malicious JavaScript code. This code is likely responsible for downloading and executing a second-stage payload, a common technique for malware delivery.

Heuristics 5

  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • 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.
  • PDF paints image(s) but contains no text operators info PDF_IMAGE_ONLY_LURE
    PDF has 2 image XObject(s) and the content stream contains no text-emitting operators (BT/ET, Tj, TJ, ', ") in either raw bytes or decompressed streams — this is the screenshot-as-PDF pattern used to bypass text-based scanners and to deliver instructions purely through rendered pixels. It is informational unless paired with invisible links or risky URI context.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xap/1.0/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/photoshop/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/tiff/1.0/
    • http://ns.adobe.com/exif/1.0/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0034_000.js
c8b19469af6a94474463b83560c8e8573cc0903c55956eb10fe3acd4daae3654		 pdf-javascript-stream PDF /JS object 34 at offset 0xAFBD 44204 bytes
javascript_obj0035_001.js
53cf5006b4d96354644c0bf81069f68e7dec68369cbc44175eae885e5cbb45a9		 pdf-javascript-stream PDF /JS object 35 at offset 0xD880 269 bytes
javascript_obj0036_002.js
c9b8c2548a4bae8f68c7b4cf1a29781be5c96a060a44200f8e932b5d3a57d2a3		 pdf-javascript-stream PDF /JS object 36 at offset 0xD99C 210 bytes

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