Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf03b58ce8efb6ea…

MALICIOUS

PDF

350.4 KB Created: 2015-08-24 00:23:37 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-09-25
MD5: 6c0b006be9b0b090a32af310761bb3ea SHA-1: 0b591797321b293a5554231796441d1830938a20 SHA-256: cf03b58ce8efb6ea7c847282723aa3d2a93c646b08f7b1d035853e78cbebbeb4
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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%B7%D0%B0%D0%B3%D1%80%D1%83%D0%B7%D0%BE%D1%87%D0%BD%D0%B0%D1%8F+%D1%84%D0%BB%D0%B5%D1%88%D0%BA%D0%B0+windows+7+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4692/4692970_chit__dlya__world_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693579_skachat__blok__launcher_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693072_zvuk__ot__komarov_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000530c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x530C0 8972 bytes
SHA-256: c929d55d0a31394572556eb85ee84b407b4e00825cade6530fc23cfea7a54cf3
font_01_sfnt_off00054ad7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54AD7 15144 bytes
SHA-256: 7c8e374780edab4e0f2b401d30a919dcda4cf4a85d98463a01bfbc52b3ca1064

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