Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fa094e0ba0607eb…

MALICIOUS

PDF

275.6 KB Created: 2011-04-06 16:40:57 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 2.5.000_PHP4 (http://www.tcpdf.org))
MD5: f53d5d38af1b66e6b39c99b2bad164f0 SHA-1: 93bc078824863074f58873e25911386dc8f3f7c9 SHA-256: 0fa094e0ba0607eb53ba1697c421a3016af5b515c19fd1e0c37a6b5b31817321
92 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The file was flagged by ML classifiers and ClamAV as malicious, specifically as a PDF dropper. The embedded URL, http://gdhdfhedrhdfh.co.cc/QQkFBg0AAQ0MBA0DEkcJBQYNAQIEAgEMBQ==, is highly suspicious and likely serves as the download location for a secondary payload. The PDF structure itself contains obfuscated streams, typical of malware attempting to hide its malicious components.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8406

Heuristics 2

  • ClamAV: Pdf.Dropper.Agent-7597319-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7597319-0
  • 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://gdhdfhedrhdfh.co.cc/QQkFBg0AAQ0MBA0DEkcJBQYNAQIEAgEMBQ==
    • 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/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
    • http://ns.adobe.com/photoshop/1.0/
    • http://ns.adobe.com/tiff/1.0/
    • http://ns.adobe.com/exif/1.0/
    • http://www.iec.ch
    • http://www.gnu.org/copyleft/gpl.html

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000bda3.bin
a5337ef1f5a0dfe4dc8fa6b4f3ef847a53624800b5928a0eeef5b888ceecaabc		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xBDA3 264072 bytes

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