Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cb5e33952366c7a…

MALICIOUS

PDF

235.8 KB Created: 2010-02-24 19:21:20 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: 85e17bd74dac80d72682978fb86529e5 SHA-1: cca17edeaeff82bccceb2f52e7c25b61e8300c8d SHA-256: 4cb5e33952366c7a3ff6777a8006d0039201d9c4613da7cd779870af9c5f7d97
72 Risk Score

Malware Insights

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

The PDF file contains a hidden HTML iframe, which is a common technique for redirecting users to malicious sites. The embedded URLs point to suspicious domains, suggesting an attempt to lure users to potentially harmful content. No scripts were extracted from this sample, limiting the ability to determine further malicious intent.

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