Malicious PDF — malware analysis report

Static analysis result for SHA-256 b75382c427000b92…

MALICIOUS

PDF

345.0 KB Created: 2015-08-28 11:31:27 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d40b05688944a2e6f3ee65077e4daa4f SHA-1: ae817b4a530cb9fb8ca1b3afc47438df334142f1 SHA-256: b75382c427000b92097c802cb668362f59aab107e932c57e4a41a9deadf209da
90 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for containing a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. No scripts were extracted, and the document body was heavily obfuscated and truncated, preventing further analysis of its specific content or intent beyond the malicious link.

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%84%D0%BE%D1%80%D0%BC%D1%83%D0%BB%D0%B0+%D0%B1%D0%B0%D0%B9%D0%B5%D1%81%D0%B0+%D0%BF%D1%80%D0%B8%D0%BC%D0%B5%D1%80%D1%8B&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802378_uchebnik__po__arhitekture_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802386_skachat__gta_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802390_dragunkin__angliyskiy__yazuyk_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00051ce9.bin
5b255f56a121d715e04852e3e43aff7a0cfb81cce294e9bacdc76746b49834fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51CE9 8704 bytes
font_01_sfnt_off000535f0.bin
a69493302e6f3075ff30d253b100f5864e592145be54b146b846fb55b23bc727		 pdf-font-stream PDF embedded font (sfnt) at offset 0x535F0 14804 bytes

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