Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac1c9087cb481def…

MALICIOUS

PDF

335.4 KB Created: 2015-08-29 11:39:21 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-11-23
MD5: 03ff95998c0f38f6c919b9052b0c76d2 SHA-1: 947f30c76d796735e7d209a153bb28047b23cfac SHA-256: ac1c9087cb481def012f7a2e9a3b4c3438755f72ce85bf7a6e90270b57fe43f6
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 website. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of a malicious URL is sufficient to infer a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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+%D0%BA%D1%80%D0%BE%D1%81%D1%81%D0%B2%D0%BE%D1%80%D0%B4%D1%8B+%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//4830/4830065_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830317_skachat__muzuyku__besplatno_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830625_skachat__dlya__androida_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004fbde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FBDE 8628 bytes
SHA-256: 8dfe5168ce4a37355315c3c6e16de7d0ea8e4ab5208dd8a9cb3be3f9555424b3
font_01_sfnt_off0005149d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5149D 12996 bytes
SHA-256: 7708d7c70404662d23005aee95a0c71d73acad6e4d9699fd594b315cda76b60c

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