Malicious PDF — malware analysis report

Static analysis result for SHA-256 64061d028952d1dc…

MALICIOUS

PDF

437.8 KB Created: 2011-09-17 11:21:47 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 2.5.000_PHP4 (http://www.tcpdf.org))
MD5: b45c065932f1a864b239876a8fb28238 SHA-1: 0d12cb96882aba18b09db2179cf167c0ba6140ef SHA-256: 64061d028952d1dc3c8dc287fab65f8d49d63ba83f5a51180c9f168ec93c54e3
72 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a hidden HTML iframe, indicating an attempt to redirect the user to external malicious websites. The ML classifier also strongly flagged this PDF as malicious. While no scripts were directly extracted, the presence of embedded URLs and the hidden iframe suggests a phishing or redirection attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

Heuristics 2

  • PDF contains hidden external HTML iframe high PDF_HIDDEN_HTML_IFRAME
    PDF bytes contain a hidden zero-size HTML iframe pointing to an external HTTP(S) URL. This is a strong malicious dropper/redirect indicator and is not expected in ordinary PDF content.
  • 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://www.mavideniz1.org/forum
    • http://www.mavideniz1.org
    • http://www.gnu.org/copyleft/gpl.html

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000b940.bin
a5337ef1f5a0dfe4dc8fa6b4f3ef847a53624800b5928a0eeef5b888ceecaabc		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB940 264072 bytes

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