Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8b27c8e3b6c359c…

MALICIOUS

PDF

369.9 KB Created: 2015-08-28 00:02:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: a6440f76b6094ebd4b54b25831216628 SHA-1: 8616c9871f47c21b23a13a6632f6b41b3c549f27 SHA-256: b8b27c8e3b6c359cd0686d7c42723572b0423678577c83ee14f223e41d92ac7d
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/..., is identified as a malicious redirector. This suggests the document is designed to lure users to a malicious website, likely for phishing or malware delivery. No scripts were extracted, and the document body was heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

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%B7%D0%B0%D1%8F%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5+%D0%BE+%D0%BF%D0%B5%D1%80%D0%B5%D1%81%D0%BC%D0%BE%D1%82%D1%80%D0%B5+%D1%80%D0%B5%D1%88%D0%B5%D0%BD%D0%B8%D1%8F+%D0%BF%D0%BE+%D0%B2%D0%BD%D0%BE%D0%B2%D1%8C+%D0%BE%D1%82%D0%BA%D1%80%D1%8B%D0%B2%D1%88%D0%B8%D0%BC%D1%81%D1%8F+%D0%BE%D0%B1%D1%81%D1%82%D0%BE%D1%8F%D1%82%D0%B5%D0%BB%D1%8C%D1%81%D1%82%D0%B2%D0%B0%D0%BC&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787992_skachat_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787871_proshivka__dlya__samsung_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788007_skachat__kartu__germanii_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00058010.bin
b505a4655537bb813eaec2c3eba5b2282956563a195b331cdb7d89fcd2277911		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58010 8148 bytes
font_01_sfnt_off000597ab.bin
5257f74d5b5f3fec2c611a6541ad50c84159dd65c1543ebe8867649cd7beece6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x597AB 15628 bytes

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