Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe092f20aaff7ddd…

MALICIOUS

PDF

379.9 KB Created: 2015-08-28 15:14:27 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c16e5b8d36b2ea875e9ac4170c30fef8 SHA-1: 1162a8fa5b36bd55f5b00c13120d534e3bbd6e18 SHA-256: fe092f20aaff7ddde208e06fac75190cb84c6a8f3779c2eeba574a2e343b92fd
90 Risk Score

Malware Insights

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

The PDF document was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirects. No scripts were extracted, and the document body was truncated and unreadable, preventing further analysis of the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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%BB%D1%83%D0%BA%D1%8C%D1%8F%D0%BD%D0%B5%D0%BD%D0%BA%D0%BE+%D0%BA%D0%BE%D0%BD%D0%BA%D1%83%D1%80%D0%B5%D0%BD%D1%82%D1%8B+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4804/4804032_vh__skachat__dlya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4804/4804406_sociologiya__tadevosyan__uchebnikchitat_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4803/4803079_podnimayas__ko__mne_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005aec7.bin
d0f93ed6fbd25093c0f39cc9f95c4e92cc733564bbf4a58348873282ea0b5146		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AEC7 7252 bytes
font_01_sfnt_off0005c3a2.bin
a3bfc6104896137e4a46625082c319a7f6ad38d99b09eb695d65207cb76d2aa0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C3A2 14012 bytes

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