Malicious PDF — malware analysis report

Static analysis result for SHA-256 8103fc56a05e0db0…

MALICIOUS

PDF

362.9 KB Created: 2015-08-28 11:37:31 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 88f08fac67dc93bfe8a7ca90a029e3c6 SHA-1: e55fe6f163ddf88fa14e0abadf61b402e3cd0539 SHA-256: 8103fc56a05e0db0c5ad3d2df392f1d85f72a05c2b8e38223556ab768b7304b8
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of a malicious URL suggests the document is designed to lure users to a compromised site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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%BC%D0%B0%D1%88%D0%B0+%D0%B8+%D0%BC%D0%B5%D0%B4%D0%B2%D0%B5%D0%B4%D1%8C+%D0%B4%D0%BE%D0%B3%D0%BE%D0%BD%D1%8F%D0%BB%D0%BA%D0%B8+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802416_maynkraft__1__5_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802449_skachat__film__mstiteli_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802455_renoise_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056883.bin
796e1b9eed654f084093c64a12f7d771e6b944b3b485cd2f6ebbe2718a9638f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56883 8040 bytes
font_01_sfnt_off00058003.bin
80cb63755d143d9a7de9adcbd54155b9b0770a65c92f26e62996d8f95780ea94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58003 14348 bytes

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