Malicious PDF — malware analysis report

Static analysis result for SHA-256 f11dd922718d6342…

MALICIOUS

PDF

360.9 KB Created: 2015-08-28 11:41:45 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 26015d96e6b7c8111fe32507af62ab88 SHA-1: 53fb18c3b608189a228bb9d1fc07bcfcba60cd6e SHA-256: f11dd922718d63421e592f1dc51363200309f229aebd51478a88ee4f20ab757b
92 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 ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is classified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a harmful website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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%BF%D1%80%D0%BE%D0%B5%D0%BA%D1%82%D1%8B+%D0%B4%D0%BE%D0%BC%D0%BE%D0%B2+%D1%81+%D0%BC%D0%B0%D0%BD%D1%81%D0%B0%D1%80%D0%B4%D0%BE%D0%B9+%D0%B8+%D0%B3%D0%B0%D1%80%D0%B0%D0%B6%D0%BE%D0%BC+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802383_goluye__yelfiyki_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802520_skachat__igru__maynkraft_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000560e9.bin
fced911bbb9cbbc1c73674a2c030c3b05ef79ef69d2a76b72db83c5c619efb69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x560E9 8868 bytes
font_01_sfnt_off00057a76.bin
37167f091a730e8eca33938a1a742df7446bf2074c3acffd0a9da7e6aabde595		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57A76 12812 bytes

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