Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc8fc6c4774cf604…

MALICIOUS

PDF

356.7 KB Created: 2015-08-26 18:42:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 22da039f44072b8d5ad79f53b29ec7d0 SHA-1: a291144af75ecb2094bc78fd536a76d3eecbe815 SHA-256: fc8fc6c4774cf604d1c4e5a000e6e0429a5aeae426f57805d84b1780aa74c9bd
92 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru, which is associated with a lure for downloading game mods. This indicates the document is likely part of a phishing or malware distribution scheme. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BC%D0%BE%D0%B4%D1%8B+%D0%BD%D0%B0+gta+san+andreas&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762105_dogovor__na__pogruzorazgruzochnuye_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762113_kogda__budut__izvestnuy_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762162_zarubezhnaya__muzuyka__8090_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054a55.bin
8ac1b2d2771deba66ba8a58634e2e6bcda42ee9797c1759f2a546c78ddc82f52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54A55 8780 bytes
font_01_sfnt_off000562b7.bin
8bc93dc2a07b64cd3092df10fac3ec62611ff80a76b1f3b128a8645358c8e44c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x562B7 15488 bytes

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