Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbfb1a2bfac09a3d…

MALICIOUS

PDF

376.8 KB Created: 2015-08-27 23:54:26 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9b6dde4a166cc3d6093cf8e5d2a3ddb4 SHA-1: 0b98463dd370d8d60966f774e2f35dbc21820899 SHA-256: bbfb1a2bfac09a3d8ec9373c992fb2b8576514842026689f7c0a129cd6d45e9a
90 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 points to 'botcraftman.ru', which is identified as a malicious redirector. This suggests the document's primary purpose is to lure users to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

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%B4%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80%D0%B0+%D0%B4%D0%BB%D1%8F+%D0%B2%D0%B5%D0%B1+%D0%BA%D0%B0%D0%BC%D0%B5%D1%80%D1%8B+defender+g-lens+323+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787844_moya__pervaya__zerkalka_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787761_skachat__igru__minecraft_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787764_kravcova__angliyskiy__yazuyk_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00059a4e.bin
a2b1c4087927c0612f1b69f171b04363f21a5764e8a78110a78d8259a4cf959a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59A4E 9504 bytes
font_01_sfnt_off0005b5c3.bin
699710e09fd365da3393faf8bf91479797dea44db21509d0bff7ade98be5c1d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B5C3 14976 bytes

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