Malicious PDF — malware analysis report

Static analysis result for SHA-256 71d593feb995b188…

MALICIOUS

PDF

182.5 KB Created: 2015-08-08 11:49:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 394409493b135f60f49dcb82ad035f0c SHA-1: bef7968efdc4238acc5fa88a2aec569e83fc2215 SHA-256: 71d593feb995b188c2178b37234292b9eef17f362035b42e99bfa6446bd20316
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating it redirects to known malicious infrastructure. The embedded URL 'http://botcraftman.ru/?lip&keyword=%D1%84%D0%B8%D0%B3%D1%83%D1%80%D0%B8%D1%81%D1%82%D0%BA%D0%B8+%D0%B3%D0%BE%D0%BB%D1%8B%D0%B5&charset=utf-8' is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the malicious redirector suggest an attempt 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=%D1%84%D0%B8%D0%B3%D1%83%D1%80%D0%B8%D1%81%D1%82%D0%BA%D0%B8+%D0%B3%D0%BE%D0%BB%D1%8B%D0%B5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384738_skachat_mayn_kampf_fb2.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386241_all_about_strength_training_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387510_svetodiodnaya_lenta_shema_podklyucheniya.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_off000239a2.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x239A2 3556 bytes
font_01_sfnt_off00024725.bin
e884ca3dc2d2e94bf0818906a975a9ae2d97b013e1c5fa9a2a3c78662576dba9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24725 14612 bytes
font_02_sfnt_off00027426.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27426 14468 bytes
font_03_sfnt_off00029ed9.bin
1daee575d0556aecea65ede5c0fe9831732688de286c69ba0914d0476d292dbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x29ED9 6188 bytes
font_04_sfnt_off0002b04f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B04F 6084 bytes
font_05_sfnt_off0002bfe4.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFE4 3752 bytes

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