Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc816edbee1af718…

MALICIOUS

PDF

365.8 KB Created: 2015-08-28 12:02:49 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 28c8006d88a507466d93ef62676bbb37 SHA-1: 3c806cd935a3b242bce7a9634c10a8f43fc505bb SHA-256: dc816edbee1af718f8aad0adbd1dbc2fbaa1be8c7e0c1367f536b9c9a166167c
92 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, specifically for containing a link to a known malicious redirector. The ML classifier also assigned a high probability of maliciousness. The embedded URL http://botcraftman.ru/ is confirmed as a malicious redirector, suggesting the document's purpose is to lure the user to a harmful site. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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%D1%86%D0%B5%D0%BD%D0%B0%D1%80%D0%B8%D0%B9+%D0%BD%D0%B0+%D1%8E%D0%B1%D0%B8%D0%BB%D0%B5%D0%B9+35+%D0%BB%D0%B5%D1%82+%D0%BC%D1%83%D0%B6%D1%87%D0%B8%D0%BD%D0%B5&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802860_itogovaya__kontrolnaya__rabota_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802747_skachat__sohranenie__euro_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802552_programma__dlya__dizaynera_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056dd7.bin
608459f9b10ef6e18d33f6c87cbb629a4e0927e6ce0f6176cc6072aae0963167		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56DD7 9728 bytes
font_01_sfnt_off000588fd.bin
1a59e9c38e7bea120fa01fb2d06418c96efe0dba2a7d8bfe384bec0a980403a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x588FD 15300 bytes

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