Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9a75471f9a4ac8f…

MALICIOUS

PDF

811.9 KB Created: 2010-08-16 22:26:03 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 2.5.000_PHP4 (http://www.tcpdf.org))
MD5: 8f9e21b3f749327a120c1e5907573d67 SHA-1: 490861589bd3b6cc20eb4d1c9c33befc8fc99818 SHA-256: b9a75471f9a4ac8f07c9aa5e95c46b9e77fa51a4664aee1ac8e826cb1133c5e0
100 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Html.Spyware.IMG-7. Static analysis revealed a hidden HTML iframe within the PDF structure, pointing to an external URL. This suggests the document is designed to lure the user to a malicious website, likely for further exploitation or malware delivery.

Heuristics 3

  • ClamAV: Html.Spyware.IMG-7 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Html.Spyware.IMG-7
  • 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://www.codeforum.cn/free/max1.htm

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000ba7c.bin
a5337ef1f5a0dfe4dc8fa6b4f3ef847a53624800b5928a0eeef5b888ceecaabc
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xBA7C 264072 bytes