Malicious PDF — malware analysis report

Static analysis result for SHA-256 62966145dab98df9…

MALICIOUS

PDF

372.8 KB Created: 2015-08-29 01:33:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 691605e2f58348252f30779743c287c8 SHA-1: 3d05c50bbbef1b1207074022b4335bbbad891a80 SHA-256: 62966145dab98df9987cda3434f4edd3be58d3edab6a37d739da996d508d853b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document was flagged by multiple heuristics, including a critical alert for a link to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL, http://botcraftman.ru/..., is confirmed as a malicious redirector, indicating the document's primary purpose is to lure users to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D1%8D%D0%BA%D0%B8%D0%BF%D0%B0%D0%B6&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817765_instrukciya__po__obolscheniyu_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817549_acid__pro__70_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818247_ramki__dlya__teksta_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00058f2d.bin
94515983e48132b9b6d25300fe21b2965802a8c696ff4c70d015e019a7fa2b99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58F2D 7524 bytes
font_01_sfnt_off0005a4ca.bin
5e5540df1b91a2f2831a2f06b4bfdc1b5143c52a2b91f9f54c28571e90d72f03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A4CA 15132 bytes

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