Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3d93ba68b6f14b5…

MALICIOUS

PDF

352.8 KB Created: 2015-08-19 19:12:38 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ea751731357235836dce18e1952dc382 SHA-1: faa55cbe6f3181c463ec90f4e3dfc2331dbc9e5e SHA-256: a3d93ba68b6f14b5474863b7f47fecadd96181dd9a5933547191157bf34ce54f
92 Risk Score

Malware Insights

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

The PDF contains an embedded link to a known malicious redirector infrastructure. The ML classifier also flagged this PDF with high confidence. The primary attack vector appears to be directing users to malicious content via the embedded URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%B3%D1%80%D1%83%D0%BF%D0%BF%D0%B0+%D0%B0%D1%80%D0%BC%D0%B0%D1%82%D1%83%D1%80%D0%B0+%D0%B2%D1%81%D0%B5+%D0%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC%D1%8B+%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://img1.liveinternet.ru/images/attach/c/6//4627/4627977_skachat_igru_trainz_simulator_3_12_russian_trains_russkie_poezda.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4628/4628558_skachat_porno_s_zhivotnuymi_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4627/4627128_dnevnik_po_proizvodstvennoy_praktike_dizaynera.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053647.bin
da3d68028ef8ad34062b5a75faff73d9bed613922d82539c392f195cba3b5ef6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53647 8920 bytes
font_01_sfnt_off0005502c.bin
3d9f85218b939d2c8d5667d6c27196466a96e04f1d059e3b1dfe0c13ebea464e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5502C 16640 bytes

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