Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a164bebc825385d…

MALICIOUS

PDF

185.6 KB Created: 2015-07-24 11:56:31 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 94bf8215c984840cdd4231a1e1480494 SHA-1: ac3ec6f6458530c995bda57ab1edfd3a5b3ac2e4 SHA-256: 6a164bebc825385dc1fc6d7385f698367fd337f9373f693dba81140f2429fcd2
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by multiple heuristics as malicious, specifically for containing a link to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent, likely serving as a lure for further malicious activity. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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%D1%86%D0%B5%D0%BD%D0%B0%D1%80%D0%B8%D0%B9+%D0%B8%D0%B3%D1%80%D1%8B+%D0%BF%D0%BE+%D1%81%D1%82%D0%B0%D0%BD%D1%86%D0%B8%D1%8F%D0%BC+%D0%B4%D0%BB%D1%8F+%D0%BB%D0%B0%D0%B3%D0%B5%D1%80%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185251_spin_tires_2014_versiya_1001_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184571_reshat_primeruy_6_klassa_po_matematike.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187647_ustav_yuridicheskoy_firmuy_obrazec.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_off00024204.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24204 3556 bytes
font_01_sfnt_off00024f87.bin
2d5c1d79fc6e7a69c05a80c164241c5436d6756ceada95da96ff7abf06a5e89e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F87 15140 bytes
font_02_sfnt_off00027ebb.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27EBB 14468 bytes
font_03_sfnt_off0002a96e.bin
88ca7ad64e1b37c60b9d9f4c378e05f5940e5bb71aaccddc9b70abab6d568721		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A96E 6664 bytes
font_04_sfnt_off0002bc74.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC74 6084 bytes
font_05_sfnt_off0002cc09.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC09 3752 bytes

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