Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3d474463521707a…

MALICIOUS

PDF

235.8 KB Created: 2010-02-13 19:24:15 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 2.5.000_PHP4 (http://www.tcpdf.org)) First seen: 2026-05-10
MD5: 17f04a54ca718747a78438204439c06c SHA-1: c9e36c6d97edb56d8af4ad2dcfbfe07060e2a302 SHA-256: c3d474463521707ab0eecf667ebb40033b43ddd61af33cd4416527375aa966c4
72 Risk Score

Malware Insights

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

The PDF file contains a hidden external HTML iframe, indicating an attempt to redirect the user to malicious content. The embedded URLs point to suspicious domains, likely serving as landing pages for further exploitation or credential harvesting. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

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 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_001_off0000049b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49B 91432 bytes
SHA-256: 5b0765156a7522e1b20f16cb911bf3a03d568d8ee9f5cab18481d8449fa81040
stream_002_off0000b9ed.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB9ED 264072 bytes
SHA-256: a5337ef1f5a0dfe4dc8fa6b4f3ef847a53624800b5928a0eeef5b888ceecaabc