Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4026e7a14e0ac69…

MALICIOUS

PDF

185.7 KB Created: 2015-07-25 02:41:55 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: bf80b1d1a00267f3955e0e999a5f4528 SHA-1: 1f0e03aabe7e34ea5e9230abe3a2d6ef1d76109c SHA-256: b4026e7a14e0ac6911eb9d60489b9e6f947b4cce94f26ed9ee7ab0af52ea1894
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is associated with malicious activity. This suggests the document is designed to lure users to a compromised 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%A0%D0%B0%D0%B1%D0%BE%D1%87%D0%B0%D1%8F+%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0+%D0%BF%D0%BE+%D0%B8%D1%81%D1%82%D0%BE%D1%80%D0%B8%D0%B8+5+9+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+%D0%BF%D0%BE+%D1%84%D0%B3%D0%BE%D1%81&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183249_proekt_po_fizicheskoy_kulture.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184997_waves_tune_vst_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192389_porka_gornichnoy_v_angliyskoy_literature.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002428e.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2428E 3556 bytes
font_01_sfnt_off00025011.bin
c2008ed572cd2c2d7919199734074382c202077f99bc81ca1c49ed2c0ebe7501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25011 14796 bytes
font_02_sfnt_off00027e0e.bin
c3979fe731794728e10126282aa809b8d83047cfdaabea4846171822c88621c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E0E 14640 bytes
font_03_sfnt_off0002a942.bin
ccb563260704913cd6b8bf8f2a2757336ad7b3a575853b9cb8c029608d30d8b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A942 6880 bytes
font_04_sfnt_off0002bd31.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD31 6084 bytes
font_05_sfnt_off0002ccc6.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCC6 3752 bytes

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