Malicious PDF — malware analysis report

Static analysis result for SHA-256 955592852b9441fe…

MALICIOUS

PDF

811.9 KB Created: 2010-09-13 21:28:14 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 2.5.000_PHP4 (http://www.tcpdf.org))
MD5: 06b539670244c0cc4f1e1ab6f24b523b SHA-1: efeb77881c14c4cf42d4b8a72066e2f34f73a709 SHA-256: 955592852b9441fed65f2c2857ac46b1d1f9df88ad3682f4ea76638ba2019853
100 Risk Score

Malware Insights

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

The PDF file contains a hidden HTML iframe pointing to an external URL, which is a common technique for redirecting users to malicious sites. ClamAV detected this file as Html.Spyware.IMG-7, indicating malicious intent. The embedded URL is the primary indicator of compromise.

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