Malicious PDF — malware analysis report

Static analysis result for SHA-256 6318ca19526165f7…

MALICIOUS

PDF

187.7 KB Created: 2015-08-04 10:50:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c33323bf7614c40045f1fb692b8ce56a SHA-1: e04419d3160d9266c426a510a3012e536c753d7a SHA-256: 6318ca19526165f71a69b88d7970267279cc5a2e06170d35896a18ccc29af28d
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The ML classifier also flagged the document with high confidence. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

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%B2%D0%BE%D1%81%D1%8C%D0%BC%D0%B8%D0%B4%D0%B5%D1%81%D1%8F%D1%82%D1%8B%D0%B5+4+%D1%81%D0%B5%D0%B7%D0%BE%D0%BD+%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+%D0%B2+%D1%85%D0%BE%D1%80%D0%BE%D1%88%D0%B5%D0%BC+%D0%BA%D0%B0%D1%87%D0%B5%D1%81%D1%82%D0%B2%D0%B5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4240/4240566_skachat_zarubezhnuyy_rep_2015_novinki_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4195/4195525_otvetuy_na_voprosuy_k_yekzamenu_na_sudyu.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4269/4269013_protivostoyanie_voyna_v_zalive_skachat_torrent.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000249ba.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x249BA 3556 bytes
font_01_sfnt_off0002573d.bin
69fdb610897a37de2bf456542c3f00bb9808c1b31aa691edfbfe8bd62eebce32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2573D 14792 bytes
font_02_sfnt_off0002856e.bin
7ab75e42e48c9bb8b2ce510fdc50a0688191191b07b26ef2dc3d5b55cb9d7c97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2856E 14804 bytes
font_03_sfnt_off0002b095.bin
083f62276588a0b482f5b30b5899ec7181c8d48165b756377b44a9cc0d07d944		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B095 7108 bytes
font_04_sfnt_off0002c529.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C529 6084 bytes
font_05_sfnt_off0002d4be.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D4BE 3752 bytes

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