Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a658e75bba0f323…

MALICIOUS

PDF

355.1 KB Created: 2015-08-24 00:13:11 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-11-21
MD5: 69239bad7513b5e4db90f32be46e07b8 SHA-1: b32cc44b536bf4f8989acfa87e422fa6bc77760a SHA-256: 1a658e75bba0f323f825b11046e39a09a5bf4f9989f9d4ba3a105ecf35b2f936
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 highly indicative of malicious intent. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and the malicious URL suggest it's designed to lure the user to a compromised site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

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%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86+%D0%B7%D0%B0%D1%8F%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D1%8F+%D0%B2+%D0%BF%D1%80%D0%BE%D0%BA%D1%83%D1%80%D0%B0%D1%82%D1%83%D1%80%D1%83+%D0%BE+%D0%BD%D0%B5%D0%B2%D1%8B%D0%BF%D0%BB%D0%B0%D1%82%D0%B5+%D0%B7%D0%B0%D1%80%D0%B0%D0%B1%D0%BE%D1%82%D0%BD%D0%BE%D0%B9+%D0%BF%D0%BB%D0%B0%D1%82%D1%8B&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693588_halo__3__skachat_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693612_excel__password__recovery_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693908_skachat__chit__na_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000540ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x540EC 8884 bytes
SHA-256: 228702805e2594246a1e8cedf8b8a4b0ebef2c7766622f69f864d8a88f9ffaff
font_01_sfnt_off00055ac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55AC8 17056 bytes
SHA-256: 166c8127fd51487f58f2db06ad35497867c79f77e98935d53ba119d9eac84396

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