Malicious PDF — malware analysis report

Static analysis result for SHA-256 04409066d152e590…

MALICIOUS

PDF

235.8 KB Created: 2010-02-08 19:27:29 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 2.5.000_PHP4 (http://www.tcpdf.org))
MD5: 13e263bec1ed0b3804e40a27a17ffc1d SHA-1: 422ded4804b718c2b5dedcc11217f62088957267 SHA-256: 04409066d152e590fcddef8ccb4a735105f8aec8f7e9f5d92e469fab96d5dccd
72 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a hidden HTML iframe, indicating a malicious intent to redirect the user to external content. The embedded URLs, such as http://fuadrenal.com/lib/index.php, are likely part of a malicious infrastructure used to serve further malicious content or phishing pages. The authoring application suggests it was generated by Joomla! via TCPDF, which can sometimes be exploited or used to obfuscate malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9482

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
    • http://reycross.com/lib/index.php
    • http://odmarco.com/lib/index.php
    • http://www.gnu.org/copyleft/gpl.html

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000b9ed.bin
a5337ef1f5a0dfe4dc8fa6b4f3ef847a53624800b5928a0eeef5b888ceecaabc		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB9ED 264072 bytes

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