Malicious PDF — malware analysis report

Static analysis result for SHA-256 a20bd49c1cafe16b…

MALICIOUS

PDF

356.6 KB Created: 2015-08-19 15:47:27 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-11-23
MD5: ed75550efde91a56676afc072bd60e4c SHA-1: 7c87720f25116bd08168db048cc3147729b59c48 SHA-256: a20bd49c1cafe16b2bb3e7e2cfc40457f6c6a17c6c88baefb4ad4f55ca726de8
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the PDF structure and the malicious link suggest it's designed to lure users to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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%80%D1%83%D1%81%D1%81%D0%BA%D0%B0%D1%8F+%D0%BA%D1%83%D1%85%D0%BD%D1%8F+%D0%B0%D0%B7%D0%B1%D1%83%D0%BA%D0%B0+%D0%B4%D0%BE%D0%BC%D0%B0%D1%88%D0%BD%D0%B5%D0%B3%D0%BE+%D1%82%D0%B5%D1%80%D1%80%D0%BE%D1%80%D0%B8%D0%B7%D0%BC%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+pdf&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4627/4627663_kuyzduyk_alu_video.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4627/4627656_dolg_ranmarna_skachat_fb2.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4627/4627860_multimedia_fusion_2_skachat_na_russkom.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005422b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5422B 10196 bytes
SHA-256: 10da45d28fdb23786f9bf22f74c6284161e22204c4db317c23b68dba9169ceb4
font_01_sfnt_off00055f7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55F7D 16944 bytes
SHA-256: 65fee96a95b1e8e7145b5540fd51575c4de2590d5d3ad1f1c6328236f69f8e70

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