Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff5a50699af8e57c…

MALICIOUS

PDF

437.8 KB Created: 2011-08-18 17:57:06 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 2.5.000_PHP4 (http://www.tcpdf.org))
MD5: 13790f45711117946795c7343a967036 SHA-1: de0b6192007fb0c626f4b93b99010b8c96a0283b SHA-256: ff5a50699af8e57c4b27ebc0914b06e897b6f5410dd0cb96490bec65a2331f48
70 Risk Score

Malware Insights

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

The PDF file contains a hidden HTML iframe, indicating an attempt to redirect the user to external malicious content. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs are likely part of this redirection scheme. No scripts were extracted from this sample.

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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