Malicious PDF — malware analysis report

Static analysis result for SHA-256 7423b0bfa7a1caca…

MALICIOUS

PDF

346.9 KB Created: 2015-08-28 11:29:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: eeb51adeecd416b7b186ab0dcd64c45e SHA-1: 67f1920ef0cb7d87dec3be9ca14b7a21cffdaa54 SHA-256: 7423b0bfa7a1cacae4639ea851a58212f1968e4ad11eccc3a59c422f0c0c5670
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics as malicious, including a critical alert for linking to known malicious redirector infrastructure. The embedded URL `http://botcraftman.ru/...` is the primary indicator of malicious intent, suggesting the document's purpose is to redirect the user to a potentially harmful site. While no scripts were explicitly extracted, the nature of the PDF and the malicious URL strongly suggest it acts as a dropper or downloader.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8963641-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8963641-0
  • 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%BF%D1%80%D0%B8%D0%BB%D0%BE%D0%B6%D0%B5%D0%BD%D0%B8%D0%B5+%D0%B4%D0%BB%D1%8F+%D0%B2%D0%BA%D0%BE%D0%BD%D1%82%D0%B0%D0%BA%D1%82%D0%B5+%D1%87%D1%82%D0%BE%D0%B1%D1%8B+%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BF%D0%B5%D1%81%D0%BD%D0%B8&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802363_detali__mashin__i_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802361_kak__perevesti__pechat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052b90.bin
bcc5513523de0272993cecc58dc8580a2fd2f1e4d39fc1c46724269920ef04d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52B90 8388 bytes
font_01_sfnt_off000543a5.bin
13f217039e9cbd48aeff37f842a967d137d737e6d269cc9f723b965b7a8995a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x543A5 12400 bytes

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