Malicious PDF — malware analysis report

Static analysis result for SHA-256 a165e30e1bbd60cd…

MALICIOUS

PDF

185.1 KB Created: 2015-08-05 16:20:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e201c5192ae76f1b22db10cc54d19f07 SHA-1: d4c21ed5c014558c0ae31f8b603e9ff855db420e SHA-256: a165e30e1bbd60cda01e7c2d82ac6b41a90209c77aa3d8cee31468a01f8928fa
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. This indicates the file is designed to lure users to a harmful website. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample, but the presence of a malicious URL is sufficient evidence for this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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%BA%D0%BE%D0%B4+%D0%BF%D1%80%D0%BE%D0%B4%D1%83%D0%BA%D1%86%D0%B8%D0%B8+%D0%BD%D0%BE%D0%BC%D0%B5%D0%BD%D0%BA%D0%BB%D0%B0%D1%82%D1%83%D1%80%D0%BD%D1%8B%D0%B9+%D0%BD%D0%BE%D0%BC%D0%B5%D1%80&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305804_skachat_chituy_na_tanki_onlayn_na_kristalluy_bez_virusov.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4302/4302691_v_tuylu_vraga_2_bezuymyannuyy_geroy_skachat_torrent_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4306/4306195_istoriya_rossii_10_klass_borisov.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024269.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24269 3556 bytes
font_01_sfnt_off00024fec.bin
69b30b3417b560cd28898f68d2aa61d459753dc07021b3419dc21af9b506ed94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24FEC 14248 bytes
font_02_sfnt_off00027cf4.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27CF4 14468 bytes
font_03_sfnt_off0002a7a7.bin
22c6c6ee2080dde89f678e3b74a05f8e8eb48ef7c6edfed4cd02d8d4e25d8ab4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A7A7 6632 bytes
font_04_sfnt_off0002ba8b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA8B 6084 bytes
font_05_sfnt_off0002ca20.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA20 3752 bytes

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