Malicious PDF — malware analysis report

Static analysis result for SHA-256 b77e0b4c8d7cc9d7…

MALICIOUS

PDF

351.2 KB Created: 2015-08-28 11:39:54 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 23b3905a441faf176b18b7200ad3ee1b SHA-1: d9752a58277afd1066ec8f69bedcfab0482c3d8e SHA-256: b77e0b4c8d7cc9d7a4aebe77d9c0105ef2872a74d769ceb8dd4245824374ec3a
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

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 identified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a harmful external resource, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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%BF%D0%B5%D1%80%D0%B2%D1%8B%D0%B9+%D0%BC%D1%81%D1%82%D0%B8%D1%82%D0%B5%D0%BB%D1%8C+%D0%B4%D1%80%D1%83%D0%B3%D0%B0%D1%8F+%D0%B2%D0%BE%D0%B9%D0%BD%D0%B0+3d+%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&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802433_chit__na__oruzhie_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802411_opera__mini__skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053447.bin
5e7993b98236921963eaa79e5a42e2da694aab263543590999939c7392fd6134		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53447 8744 bytes
font_01_sfnt_off00054dab.bin
e62421318592cb36510cd87a3132474bbf02e2e35216585543e5821b9fca0929		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54DAB 15496 bytes

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