Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e768cf310f77c91…

MALICIOUS

PDF

369.8 KB Created: 2015-08-24 00:34:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 057dbf00f1e50f04b9fb00b6a8a93037 SHA-1: 3eed75ebee7271ac8f8d73b7b1edbb05f02a6b82 SHA-256: 0e768cf310f77c91b28beea90cc32441131342e2db4a2de7822a1922275c6dc4
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 a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the heuristic firings suggest the document is designed to lure the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BA%D0%B0%D1%80%D1%82%D1%83+rus20131118+nm7+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693203_farmakologiya__uchebnik__chitat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694590_primeruy__na__vse_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693001_ne__rodis__krasivoy_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000577eb.bin
5e2d35bdcc1e05b4cb214d46806f17c6e5e6b2cb4c100980d5cfc4194d343d16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x577EB 9212 bytes
font_01_sfnt_off000592f0.bin
45e79acc24839e2814eed251c4b6929961f46f4c5ccfaf0653171441a16623a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x592F0 16756 bytes

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