Malicious PDF — malware analysis report

Static analysis result for SHA-256 95c1a1cb112076e2…

MALICIOUS

PDF

355.9 KB Created: 2015-08-21 09:24:09 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c78dfe792c2f8f1b35c53806c0e119a7 SHA-1: 8670366501a0f6a09df679524d4ae211ee8271dd SHA-256: 95c1a1cb112076e2aeb19d7e0e47dfa731754ca12c4febdc6676681a613169e4
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a critical heuristic indicating a link to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent. This suggests the document is designed to lure users to a compromised or malicious site.

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+%D0%B4%D0%BB%D1%8F+%D0%B2%D0%B8%D0%BD%D0%B4%D0%BE%D0%B2%D1%81+7&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654703_skachat_drayver_printera_canon_lbp_2900.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654726_svodnaya_vedomost_po_zarplate_blank.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654781_wolfquest_3_skachat_torrent_na_russkom.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054941.bin
5c7ff28cc18dd831655e7c457854246ffce7dbe1cace1d3e09fb193c1f3334ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54941 7872 bytes
font_01_sfnt_off00056019.bin
d1bf5d1c3de1d51613ca5e5e667147f6338522b3a0717f90a7c1c17688bd2b2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56019 15664 bytes

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