Malicious PDF — malware analysis report

Static analysis result for SHA-256 8151bc6beb8f4fe4…

MALICIOUS

PDF

186.4 KB Created: 2015-07-24 13:40:12 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 33496e5fbe4d41ed5506947b84d525eb SHA-1: 36e25100cda147c16f137f86ae03f664adbddac5 SHA-256: 8151bc6beb8f4fe4b95ee7401a4ecd07c409b5a4810bc89bd7fdc30743e18e46
90 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 direct link to a known malicious redirector. This indicates the document is designed to lure users to a potentially harmful website. The presence of embedded URLs and the critical heuristic firing strongly support this assessment.

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%A2%D0%B5%D1%81%D1%82%D1%8B+%D0%BF%D0%BE+%D0%BF%D1%80%D0%B0%D0%B2%D0%BE%D0%B2%D0%BE%D0%B9+%D0%BF%D0%BE%D0%B4%D0%B3%D0%BE%D1%82%D0%BE%D0%B2%D0%BA%D0%B5+%D1%81%D0%BE%D1%82%D1%80%D1%83%D0%B4%D0%BD%D0%B8%D0%BA%D0%BE%D0%B2+%D0%BF%D0%BE%D0%BB%D0%B8%D1%86%D0%B8%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189448_dnevnik_chempionata_po_futbolu_2015_vse_vuypuski.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190104_trudovoy_dogovor_s_glavnuym_buhgalterom_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191570_skachat_igru_gta_san_andreas_super_cars_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024798.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24798 3556 bytes
font_01_sfnt_off0002551b.bin
134582439e19f083ee532575f38d5e1ee25bbd8ddfaa4d83cbf8934fa300ebc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2551B 14408 bytes
font_02_sfnt_off0002820a.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2820A 14468 bytes
font_03_sfnt_off0002acbd.bin
8ec63a07a6f8ce5b3322de83b8e4d61ce82c88a60c49a49eba2602303fc249fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ACBD 6684 bytes
font_04_sfnt_off0002bfdd.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFDD 6084 bytes
font_05_sfnt_off0002cf72.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF72 3752 bytes

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