Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b9dab6a8733d70b…

MALICIOUS

PDF

186.8 KB Created: 2015-07-23 20:53:57 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ecc0d2f2263e017b13a96906e047741e SHA-1: c9f2bd9d2e26ba6a358a4558cc1a9fa30a0ceb93 SHA-256: 8b9dab6a8733d70b60c0f963606a99e58f1d9b984e657ed071869e6a62ff40f7
92 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. No scripts were extracted, but the presence of the malicious link strongly suggests a phishing or malware delivery attempt.

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=%D1%82%D0%B5%D1%81%D1%82%D1%8B+%D0%BF%D0%BE+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC%D1%83+%D1%8F%D0%B7%D1%8B%D0%BA%D1%83+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD+%D1%86%D1%82+%D0%B2+%D0%B1%D0%B5%D0%BB%D0%B0%D1%80%D1%83%D1%81%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184687_skachat_chertezh_invalidnoy_kolyaski.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184646_dnevnik_slabaka_kniga_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184735_koduy_na_skayrim_5_na_arbalet.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000245ba.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x245BA 3556 bytes
font_01_sfnt_off0002533d.bin
3c545605e217be1677752eb9a3998d4ea6b256cabdcbbbf677b9828ff5ca9148		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2533D 14976 bytes
font_02_sfnt_off0002821a.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2821A 14468 bytes
font_03_sfnt_off0002accd.bin
d18c9aa7dc46bfdffcdcdf04456f3c65061eb648239a4288930fcde87fc76218		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ACCD 7088 bytes
font_04_sfnt_off0002c153.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C153 6084 bytes
font_05_sfnt_off0002d0e8.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D0E8 3752 bytes

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