Malicious PDF — malware analysis report

Static analysis result for SHA-256 561ce7097cc6b2d8…

MALICIOUS

PDF

185.6 KB Created: 2015-08-08 09:47:03 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1be1729e193c6d7b8d5c9e9860f2e8d1 SHA-1: c3cd164700134965e15bc81d0cd52fb31a944e3e SHA-256: 561ce7097cc6b2d88e876eccb68672fe17a769019767c7cd7fdee69b7b080c2f
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, http://botcraftman.ru/, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of the malicious URL suggests the document's purpose is to lure the user 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%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D1%8B+%D0%B4%D0%BB%D1%8F+%D1%81%D0%BA%D0%B0%D1%87%D0%B8%D0%B2%D0%B0%D0%BD%D0%B8%D1%8F+%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE+%D1%81+%D1%8E%D1%82%D1%83%D0%B1%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383766_kak_skachat_muzuyku_na_aypad_s_vkontakte.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383854_flagi_v_hudozhestvennoy_literature.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384240_domovenok_kuzya_igra_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000241c5.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241C5 3556 bytes
font_01_sfnt_off00024f48.bin
364e22b4fc5992df0a821c9e70fb800ebaf8fb908e5a9b803cd4347267c1f052		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F48 14648 bytes
font_02_sfnt_off00027d1f.bin
4ae165705ecc41720893a92c6e94e3ee89b3be36a12e4a920505046f59c61edc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D1F 14468 bytes
font_03_sfnt_off0002a7cd.bin
da6e31fe4278d37223a63f0bf7e8902fd31ce47cbfabdda592cb08d7fd76c4be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A7CD 7084 bytes
font_04_sfnt_off0002bc67.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC67 6084 bytes
font_05_sfnt_off0002cbfc.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CBFC 3752 bytes

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