Malicious PDF — malware analysis report

Static analysis result for SHA-256 741f4ff7ded8b928…

MALICIOUS

PDF

248.2 KB Created: 2010-01-12 20:02:35 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 2.5.000_PHP4 (http://www.tcpdf.org))
MD5: c5641092e3ffa7d2dcb0b06038327f20 SHA-1: e52ca18348bd96aa8c03801e05106bea0e24f7f3 SHA-256: 741f4ff7ded8b92851bc717b38795a677147cc8f48eee1cf49c3f2355c9007ed
72 Risk Score

Malware Insights

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

The PDF contains hidden HTML iframes and embedded URLs pointing to unknown external resources. The ML classifier also flagged this PDF as malicious. These elements suggest the document is designed to redirect users to potentially harmful websites, likely as part of a phishing or malware distribution scheme. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9369

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://fuadrenal.com/lib/index.php In PDF document text
    • http://reycross.com/lib/index.phpIn PDF document text
    • http://odmarco.com/lib/index.phpIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000c41b.bin
a5337ef1f5a0dfe4dc8fa6b4f3ef847a53624800b5928a0eeef5b888ceecaabc		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xC41B 264072 bytes

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