Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cc4ce7dc784b122…

MALICIOUS

PDF

339.2 KB Created: 2015-08-28 00:07:59 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 74bac8e0636a71d1edde1ff3c4e3afd4 SHA-1: db316d923cafe152cefabd02482ecf01deb77bd6 SHA-256: 0cc4ce7dc784b1227090ddc40bd9057f03779614706e0ae1b40422d318fc7ef3
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is indicative of a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and the presence of a malicious URL suggest it's designed to lure the user into visiting a compromised site. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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=%D1%81%D1%85%D0%B5%D0%BC%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BC%D1%83%D1%82%D0%B0%D1%82%D0%BE%D1%80%D0%B0+%D1%81%D0%BA%D1%83%D1%82%D0%B5%D1%80%D0%B0&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787909_tolstushka__pod__prikruytiem_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787867_obrazec__smetuy__na_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787811_skachat__mod__na_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00050a14.bin
f03d3d25331e1f7885dddcefba66280bf2e5c3821d85c7b0def284f3847b2eb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50A14 8548 bytes
font_01_sfnt_off00052299.bin
d2d84f97ca5b02e07d951b1cf43388d4941a1649b4cd76d05d740ad601d79d2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52299 13208 bytes

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