Malicious PDF — malware analysis report

Static analysis result for SHA-256 08eb4d0ac6ac3e72…

MALICIOUS

PDF

342.4 KB Created: 2015-08-28 17:27:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 649d688c755aee5dacf01c1891f263fb SHA-1: 48f6f3e570990ac16ba3df1476c53c7e98baea4f SHA-256: 08eb4d0ac6ac3e72867d5b8099349a8dd3c752298ec63e64ba4a0e79a19878d6
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link that redirects to a known malicious domain, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of a malicious redirector suggests an attempt to lure the user to a site that likely hosts further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 2

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://botcraftman.ru/?lip&keyword=%D0%9C%D1%83%D0%BB%D1%8C%D1%82%D0%B8%D0%BA%D0%B8+%D0%BF%D1%80%D0%BE+%D0%BF%D0%B4%D0%B4+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809144_skachat__win__81_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809125_deniskinuy__rasskazuy__kratkoe_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809140_skript__udaleniya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00050dc6.bin
7ab5e9bfa33342b36f590078216bcd6ee3bfdb422061ebd451a6780f127ca7ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50DC6 10008 bytes
font_01_sfnt_off00052a54.bin
66d36451bbee258d2e97974bd98b592bd94c461be6ed2bf010559b4f42945e01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52A54 14964 bytes

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