Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c04d5bd10e87142…

MALICIOUS

PDF

187.9 KB Created: 2015-07-24 00:15:01 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e21a68d430b715277487d88ec963f8b6 SHA-1: af5f4c9988935035821e80f19179788971a556e6 SHA-256: 6c04d5bd10e87142b9340231eb62791a1e83856b926c5957637cc780b49b7362
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics as malicious, specifically for containing a link to a known malicious redirector. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the presence of a malicious URL suggests an attempt to redirect the user to a harmful site, likely for phishing or malware delivery. The document's structure and metadata indicate it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.

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%81%D0%BB%D0%BE%D0%B2%D0%BE%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5+%D0%B2+%D0%B0%D0%BD%D0%B3%D0%BB%D0%B8%D0%B9%D1%81%D0%BA%D0%BE%D0%BC+%D1%8F%D0%B7%D1%8B%D0%BA%D0%B5+%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185422_10.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184290_razrabotka_urokov_v_nachalnuyh_klassah_v_uzbekistane.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184892_agabekyan_angliyskiy_yazuyk_dlya_ssuzov_reshebnik_gdz.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_off00024baa.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24BAA 3556 bytes
font_01_sfnt_off0002592d.bin
fe2c08e638eb8f0ed9296aa70782b73bd0939d90c93fd8472ddd9674ad5a9d7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2592D 14480 bytes
font_02_sfnt_off000286b0.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x286B0 14468 bytes
font_03_sfnt_off0002b163.bin
9b3b83f3c23c2bba2de078dfd6664a86170c32ca466731ed6b22d8d738169d43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B163 7076 bytes
font_04_sfnt_off0002c5db.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C5DB 6084 bytes
font_05_sfnt_off0002d570.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D570 3752 bytes

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