Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc10f03bc5d593d3…

MALICIOUS

PDF

350.9 KB Created: 2015-08-24 00:45:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 246d0acd7d2ea87ac46f1544c30b2180 SHA-1: 335dc064ff66f6bbd321ee9a9535fcc3acf5c4a9 SHA-256: dc10f03bc5d593d32af06ee5ee8cb577ff26661623e713c200e1e22c81c08aab
92 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.002 Spearphishing Attachment

The PDF file contains a link to a known malicious redirector, botcraftman.ru. This indicates an attempt to lure the user to a potentially harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact lure.

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%94%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80+%D0%B4%D0%BB%D1%8F+lexand+st+5350&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693459_tancuy__na__tnt_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693921_skachat__temuy__dlya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694605_spravka__formuy__4n_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052a0e.bin
1f5dd522c923c85d8ebca76b6f809840bcad1b76ac08258707bb6d5b01637018		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52A0E 10156 bytes
font_01_sfnt_off00054732.bin
0055f17214c0cef93dbe6bd8a93f109c24a30ee6d647be160d39440e16672e06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54732 17496 bytes

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