Malicious PDF — malware analysis report

Static analysis result for SHA-256 65cb3540688a0972…

MALICIOUS

PDF

341.9 KB Created: 2015-08-28 20:10:54 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-10-14
MD5: fe5af2117472fab422d5ae89c881ea5a SHA-1: c58975bcbe48c737163518c59ca8fa521a284eeb SHA-256: 65cb3540688a097258a986f44076b73da306fe95e79fcfbe999903b68d287a8f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL points to 'botcraftman.ru', which is flagged as malicious. This suggests the document is designed to lure users to a harmful website, likely for phishing or malware delivery. No scripts were extracted, and the document body was unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%B3%D0%BE%D1%81%D1%82+1669-78+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4811/4811104_skachat__cherez__torrent_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4811/4811454_adobe__audishn__15_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4810/4810644_skachat__multfilm__anastasiya_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00051155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51155 8444 bytes
SHA-256: 912416845c1ce4b282d4c08c0c782d5114319c228d9a882b993e2735d7a3c217
font_01_sfnt_off00052a34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52A34 14176 bytes
SHA-256: dece801455bf188d798defd80b1bfdcfd43489cc4a014f949b8161b7b83a2dad

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