Malicious PDF — malware analysis report

Static analysis result for SHA-256 b773bf582860b17c…

MALICIOUS

PDF

437.8 KB Created: 2011-09-07 19:38:16 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 2.5.000_PHP4 (http://www.tcpdf.org))
MD5: 2c82c8463cc0841befc26b66ff4c9760 SHA-1: 298a7ebbb769a66c575918b6e2420e1dfedb2353 SHA-256: b773bf582860b17ca518c66d3a0471690e14ff2d0138bdc5b72de27e5ec8abd1
72 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a hidden external HTML iframe, indicating an attempt to redirect the user to a malicious website. The ML classifier also flagged this PDF with high confidence. The embedded URLs point to potentially compromised domains. The primary attack vector appears to be luring the user to visit these external sites, likely for further exploitation or credential harvesting.

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

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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