Malicious PDF — malware analysis report

Static analysis result for SHA-256 32ce159d9be07942…

MALICIOUS

PDF

248.2 KB Created: 2010-01-19 19:23:47 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 2.5.000_PHP4 (http://www.tcpdf.org))
MD5: 9fab7c441eaeac68a9d7e6f02e5163d5 SHA-1: c7e494016f86e6c16561192323056625dc1ca597 SHA-256: 32ce159d9be07942ff05ce53ece715b38da152ed174fa9e1b41a1bd3c3a81e0b
70 Risk Score

Malware Insights

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

The PDF file contains a hidden iframe and embedded URLs pointing to suspicious domains. The ML classifier also flagged this PDF as malicious. These indicators suggest the document is designed to lure the user to external sites, which could be used for credential harvesting or to download additional malware. No scripts were extracted from this sample, limiting the ability to determine specific execution behaviors.

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
    • http://reycross.com/lib/index.php
    • http://odmarco.com/lib/index.php

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