PDF malware analysis — malicious · 1fa486b1086e454f

MALICIOUS

PDF

811.9 KB Created: 2010-09-17 21:58:55 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 2.5.000_PHP4 (http://www.tcpdf.org))

MD5: 75a4ebc8ca4b9e16fba3bd4ac005ccee SHA-1: b6555bb4b8e41ea6316e3ef82807ae8d6602fb1b SHA-256: 1fa486b1086e454f418a2ad598042194a408f7df068b9c04cfef1702a67dbcc4

100 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 exploiting vulnerabilities and redirecting users to malicious sites. ClamAV identified this as Html.Spyware.IMG-7. The embedded URL points to a suspicious domain, likely serving as a lure for further malicious activity. The presence of a hidden iframe suggests an attempt to exploit a browser or PDF reader vulnerability, leading to a redirect.

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.

Filename	Kind	Source	Size
`stream_004_off0000ba7c.bin` `a5337ef1f5a0dfe4dc8fa6b4f3ef847a53624800b5928a0eeef5b888ceecaabc`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xBA7C	264072 bytes

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