Malicious PDF — malware analysis report

Static analysis result for SHA-256 248df8f7ae493045…

MALICIOUS

PDF

5.4 KB Created: 2012-03-01 03:39:04 Authoring application: Script by OOS [OSIS Online Shop], http://www.oos-shop.de/ (via FPDF 1.52)
MD5: 23cd9506bc6d8d6e76797214941b0fd2 SHA-1: 24c306cbc87edf67bdfdec1fe023bc21b1450888 SHA-256: 248df8f7ae49304532941efbacc44e309b26838d4be1b4ec67df5e5f733f8c36
98 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that references an external URL, indicating an attempt to download and execute a secondary payload. The ClamAV heuristic also flags this as a Pdf.Dropper.Agent. The embedded script is likely responsible for fetching and running additional malicious content from the specified URL, contributing to the overall malicious intent of the document.

Machine Learning

  • Nyx PDF Classifier clean score 0.0022

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-7596561-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7596561-0
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • 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.
  • External URI low PDF_URI
    PDF contains an external URL action
  • 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://dragosimport.com/js/
    • http://www.oos-shop.de/
    • http://www.cn-systems.de

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_000_off00000116.js
496dd193d80fd56766696d3008545bdffd727751521cfcb52b4e2f3f4386c677
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x116 1775 bytes