Malicious PDF — malware analysis report

Static analysis result for SHA-256 b26304d68d577454…

MALICIOUS

PDF

370.1 KB Created: 2015-08-25 18:27:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: bcf62e608a1f44d881afc56eecb524ae SHA-1: 9a5d04ba6cbf0b6b31c78741fa6e8202d3a812db SHA-256: b26304d68d5774546c66ffd413d4dc936fec109237c4cf340cf2db41295036cf
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector infrastructure, which is designed to trick users into downloading software. The embedded URL is part of a lure to download 'windows 7 64 bit'. The ML classifier also flagged this PDF with high confidence.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+windows+7+64+bit+%D0%BC%D0%B0%D0%BA%D1%81%D0%B8%D0%BC%D0%B0%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4733/4733872_riolis__shemuy__vuyshivok_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4732/4732998_gora__samocvetov__skachat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4732/4732689_skachat__kavkazskoe_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057ce0.bin
ed68a34e0e60c18962755fe0bb7a83a6d4739a16589fb3c4d0eb9b5caf40e49b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57CE0 9504 bytes
font_01_sfnt_off000598b3.bin
f2dfb669905ebc63cf0a8beecf7455a3872a6810c2c789c4adab1e882b2901ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x598B3 15388 bytes

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