Malicious PDF — malware analysis report

Static analysis result for SHA-256 50f40e39c2f38ea9…

MALICIOUS

PDF

350.3 KB Created: 2015-08-29 11:42:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-07-07
MD5: e35c6f695c13c386bcf56b7cfcecc1a5 SHA-1: 45acc9120436236c72f76bc7f74df9e18468c530 SHA-256: 50f40e39c2f38ea9bedb193b7babae40d5b54640933d0c827b4088448e8c5dbd
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the heuristic firing suggest a malicious intent to redirect the user.

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%BF%D0%B5%D1%80%D0%B5%D1%83%D1%81%D1%82%D0%B0%D0%BD%D0%BE%D0%B2%D0%BA%D0%B0+windows+8+%D0%BD%D0%B0+windows+7&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830001_skachat__igruy__na_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830642_skachat__adobe__after_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830220_obuchayuschie__igruy__dlya_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052ba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52BA2 9676 bytes
SHA-256: d8e7df33bae38af80d92c6c3994b19f39b220910b6e0e40284127c201e582511
font_01_sfnt_off000547dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x547DC 16264 bytes
SHA-256: b8e09889676bdf4ae4efbfd3adf5b9ffcc391e702e202f3af3b295a10bebc79a

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