Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3fcb960d25d8a23…

MALICIOUS

PDF

361.1 KB Created: 2015-08-27 09:46:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 24716bb2fa214a39ed427d0df57ee0d8 SHA-1: d562e680858e607a973d73b0a6aa792edab3a48a SHA-256: d3fcb960d25d8a23fa7431e194ac70a7ccdbe1b3506e4f587f9a2f482ea53fbc
92 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector URL, botcraftman.ru. This indicates an attempt to lure the user to a malicious site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of the malicious URL is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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%D0%BE%D0%BB%D0%BE%D0%B6%D0%B5%D0%BD%D0%B8%D0%B5+%D0%BE+%D0%BF%D1%80%D0%BE%D0%B8%D0%B7%D0%B2%D0%BE%D0%B4%D1%81%D1%82%D0%B2%D0%B5%D0%BD%D0%BD%D0%BE%D0%BC+%D0%BA%D0%BE%D0%BD%D1%82%D1%80%D0%BE%D0%BB%D0%B5+2015+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771829_skachat__besplatno__igru_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771900_prisyagnuvshie__tme__skachat_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771915_skachat__chetan__engine_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055817.bin
be72eca5ac8450de520bdf64ad15215a4495dbe63ae526d2fc50cdb9f5898f45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55817 9876 bytes
font_01_sfnt_off000574fb.bin
64fb1a890bcf99fff1b55a45cdaf44050d5a5f28e07f1286ca9c2f0aebbdb2e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x574FB 15220 bytes

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