Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8654325fafdd1c6…

MALICIOUS

PDF

188.0 KB Created: 2015-07-25 09:24:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c0836e09542d214682c301c29cb7668f SHA-1: 0649be94c8652a9f98e5997ebf98da954edaf476 SHA-256: b8654325fafdd1c668637dc647d1ab2264a8d1386538658d181c39a5ec7b685e
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a redirect to known malicious infrastructure at http://botcraftman.ru/. This strongly suggests the document's purpose is to lure the user to this site, likely for phishing or to initiate a malware download. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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=%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+windows+7+%D0%BC%D0%B0%D0%BA%D1%81%D0%B8%D0%BC%D0%B0%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F+x32+%D0%BE%D1%80%D0%B8%D0%B3%D0%B8%D0%BD%D0%B0%D0%BB%D1%8C%D0%BD%D1%8B%D0%B9+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188911_rezultatuy_dosrochnogo_egye_po_matematike_2015.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4200/4200899_kak_vosstanovit_akkaunt_v_varfeyse.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4196/4196203_lav_radio_skachat_muzuyku_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002ae75.bin
789d75af11b016cfabc6c9479f96b37ad8d21671ebcba9100b1f12f553378cd5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AE75 7952 bytes
font_00_sfnt_off00024829.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24829 3556 bytes
font_01_sfnt_off000255ac.bin
3a87013544df6a3b2c6c4f2845cabb9c2d04f8371cb2c8ba4de08f16fa9b52a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x255AC 14500 bytes
font_02_sfnt_off0002831c.bin
35c23a1eb90334561179bb6c29013d607697abf7e9dc212b9457917417d8de98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2831C 14648 bytes
font_04_sfnt_off0002c60b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C60B 6084 bytes
font_05_sfnt_off0002d5a0.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D5A0 3752 bytes

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