Malicious PDF — malware analysis report

Static analysis result for SHA-256 610da7c0ded10fd1…

MALICIOUS

PDF

360.2 KB Created: 2015-08-24 00:24:37 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 10b45c167ffc0a448969952b1d6de15a SHA-1: d12704551a11e262e087c5c086defb2a40a0938e SHA-256: 610da7c0ded10fd1805aa4f290087e14995cf0642e7b232f0d8d6bdac8c9120b
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 firing suggest the document is designed to lure users to a malicious site, likely for phishing or to download further malware.

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=andrea+bocelli+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694080_skachat__doom__4_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693644_skachat__windows__7_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694013_sbornik__tehnologicheskih__normativov_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000554da.bin
5275ab2b4712cbeccb453495e61986dcd603b70443eeaf38a9c97735aa54008c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x554DA 8972 bytes
font_01_sfnt_off00056d51.bin
45870808ac1b7eb764ae0bbb4208da8d2a1a6d46ab9873b87d477fabf68eae3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56D51 17080 bytes

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