Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b8e69d82c148050…

MALICIOUS

PDF

362.3 KB Created: 2015-08-29 12:11:45 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-07-07
MD5: 8d11be55ae496ebd59d53238d6a3d81c SHA-1: 9077f44e2dbb192394363fddcfe82ece626b5eda SHA-256: 9b8e69d82c1480500c28c92fa002c3816e75255f6d8b8611ad32a2ace23d18fb
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%83%D1%87%D0%B5%D0%B1%D0%BD%D0%B8%D0%BA%D0%B8+9+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830269_kontrolnaya__po__matematike_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4831/4831192_scenariy__1__sentyabrya_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830454_skachat__besplatno__film_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56900 7368 bytes
SHA-256: 0b08ecc9c86c44e8bb6f2a7e6cb6d5b77e1edbe62ff55cb0c8ade5b4cce77956
font_01_sfnt_off00057e83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57E83 13352 bytes
SHA-256: fb8db9e1d025c1859012b994dd66f488cf5283a8d937e3372f0027bfefaa027b

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