Malicious PDF — malware analysis report

Static analysis result for SHA-256 899cfa75cf3b5489…

MALICIOUS

PDF

183.4 KB Created: 2015-08-08 09:52:31 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 09a43dcf8e1cc20a8b5a3d39229a01fe SHA-1: bdf73e72893a3d0fe1a9ff4806f36c28654e3748 SHA-256: 899cfa75cf3b5489e4b8747394c63830ae5f97322a386c22f16992854e785987
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and contains a link to known malicious redirector infrastructure. The embedded URL points to 'botcraftman.ru', which is associated with malicious activity. While no scripts were explicitly extracted, the PDF structure and the presence of a malicious URL suggest it's designed to lure users to a harmful 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=%D1%88%D0%BA%D0%BE%D0%BB%D1%8C%D0%BD%D1%8B%D0%B5+%D0%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC%D1%8B+psd&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383789_skachat_windows_7_maksimalnaya_64_bit_s_drayverami_2015.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383958_super_pc_expert_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383911_kartuy_dlya_android_navitel.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a10d.bin
bf39abceb586315c2a29e1be9fe35f47f74eb17f5ea9ee8b3c0f1be39fee5b75		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A10D 6604 bytes
font_00_sfnt_off00023b42.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23B42 3556 bytes
font_01_sfnt_off000248c5.bin
457d60db564e1c7891cefae64b3d54d25f19bb35e0b4adf9997f43682fd37800		 pdf-font-stream PDF embedded font (sfnt) at offset 0x248C5 14508 bytes
font_02_sfnt_off00027632.bin
b23d92d5e7c2cf301406a02f4c29ee817df0b5c19f09cb2d6cbc114ecc28ed9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27632 14520 bytes
font_04_sfnt_off0002b3cb.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B3CB 6084 bytes
font_05_sfnt_off0002c360.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C360 3752 bytes

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