Malicious PDF — malware analysis report

Static analysis result for SHA-256 42ebddd0197db28b…

MALICIOUS

PDF

371.1 KB Created: 2015-08-26 19:17:15 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 2b3096840f347d19740e2c4d83967772 SHA-1: 500b8a6bf6a90b559ac717744002b1df6957734d SHA-256: 42ebddd0197db28bc18a481ba555c94f28a315a9f6720ed828aa32af80d08357
92 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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%B0%D0%BB%D0%BB%D0%BE%D0%B4%D1%8B+%D0%B3%D0%B0%D0%B9%D0%B4+%D0%BF%D0%BE+%D1%8F%D0%B7%D1%8B%D1%87%D0%BD%D0%B8%D0%BA%D1%83&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762681_koduy__na__lego_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762541_shemuy__tiristornuyh__regulyatorov_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762912_kartinki__po__obzh_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00058a58.bin
6059c4ad041366119bfa38624201861ecbe6f431bc3116c34024d4f148df3dad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58A58 7820 bytes
font_01_sfnt_off0005a0b4.bin
919b12fd2874de899e29219c84ba3e9036ff86fbf5f998ddc5efca2c0547c545		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A0B4 13896 bytes

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