Malicious PDF — malware analysis report

Static analysis result for SHA-256 11573a65188cac7e…

MALICIOUS

PDF

185.5 KB Created: 2015-07-24 11:18:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 20eabc16ac017efbad2384c3a24e61d8 SHA-1: b2c4f903d921fb897826ffc7eb51b1f40da2d2d7 SHA-256: 11573a65188cac7efcdff0bae37bb3ddb72c492db4d2b7bb387b8f72d1eb1f96
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URL, http://botcraftman.ru/, is the primary indicator of malicious intent, likely serving as a lure to a malicious site or for downloading a secondary payload.

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%D0%B9%D0%BD%D0%B0+%D0%BF%D1%80%D0%B5%D1%81%D1%82%D0%BE%D0%BB%D0%BE%D0%B2+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&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185160_instrukciya_stinol_rf_nf_255.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187303_klyuch_kasperskiy_2013.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190118_razbor_zadaniy_egye_po_fizike_2015.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_off00024295.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24295 3556 bytes
font_01_sfnt_off00025018.bin
c8ac42f2feb1304eb9a5e34012534246b50b240b2c302942cc75c0ad00a33893		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25018 14752 bytes
font_02_sfnt_off00027e4c.bin
761d7069daf6152bdf582db1b99070d964d8600c16fde6bb03dfbb6efc1fb449		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E4C 14680 bytes
font_03_sfnt_off0002a916.bin
75ec64a1340dd2ac3d9699c03af8ea414f42a4e7b792b5e264cdd0bf4cde42a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A916 6728 bytes
font_04_sfnt_off0002bc5c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC5C 6084 bytes
font_05_sfnt_off0002cbf1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CBF1 3752 bytes

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