Malicious PDF — malware analysis report

Static analysis result for SHA-256 440335c5a6b4b026…

MALICIOUS

PDF

235.8 KB Created: 2010-02-21 19:15:19 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: 82709637d43af1b51c8fc3ba0bca93b2 SHA-1: 01a9077d70129d64a903ebf0fecca89702878d10 SHA-256: 440335c5a6b4b02638585d1c50160b546d1cf3e61a38cfa77405652c8f10528e
72 Risk Score

Malware Insights

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

The PDF contains a hidden iframe, a common technique for redirecting users to malicious sites. The embedded URLs point to suspicious domains, likely serving as landing pages for further exploitation or malware delivery. No scripts were extracted, limiting the ability to determine specific payload actions.

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