Malicious PDF — malware analysis report

Static analysis result for SHA-256 17b23c0be8ba9074…

MALICIOUS

PDF

349.7 KB Created: 2015-08-27 23:43:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: e6bfbfdc977edcf6cc7c83e484971210 SHA-1: 4e9db75900804148a574d19ae551f5fce0ea023b SHA-256: 17b23c0be8ba9074fad407e7b97535e88971c94b477f4aa5846e08701fee9905
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, http://botcraftman.ru/, which is likely intended to lead the user to a malicious site. The ML classifier also flagged this PDF with high confidence. The document body is heavily obfuscated and does not provide clear textual clues, but the presence of the malicious link strongly suggests a phishing or redirection attempt.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B0%D0%B2%D0%BA-5+2110+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787775_skachat__oboi__na_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787757_kratkosrochnoe__planirovanie__po_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787839_skachat__word__2007_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052fe9.bin
6e8cf36af189010d99b21bed67c8bbb94c2e0a87993e1c7350e36f1281bef0a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52FE9 8972 bytes
font_01_sfnt_off00054a33.bin
df90c46fb87a3a2f59476f032621598cf4dd53de909ee55fff5f0d1cabf0448e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54A33 14136 bytes

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