Malicious PDF — malware analysis report

Static analysis result for SHA-256 817840dbd99deae0…

MALICIOUS

PDF

185.6 KB Created: 2015-07-23 21:01:45 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a5e430367a2890b0e7accbe85ee3f761 SHA-1: 0c6b4f8d70307ff662387022004ee78f0b17f342 SHA-256: 817840dbd99deae0fb28f54302075252f7af69ed0dcfd4cf339954edfd721cc6
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, botcraftman.ru. This indicates the document is designed to lure users to a harmful website. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample, but the presence of the malicious URL is sufficient evidence for 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%90%D0%BD%D1%82%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%8F+%D0%B1%D0%B0%D1%80%D0%B1%D0%B8+16+%D0%B2+1+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184582_skachat_shablonuy_prezentacii_powerpoint.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184379_korporativnaya_socialnaya_otvetstvennost_uchebnik_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184547_wolfenstein_the_new_order_rusifikator_teksta.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024239.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24239 3556 bytes
font_01_sfnt_off00024fbc.bin
7fc0e56f5a6b4fd78d782f1ff1ee4bda91e23dd0d479db49c6691445a6276a3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24FBC 14632 bytes
font_02_sfnt_off00027ddb.bin
426ba1c2444564d56b65c3f7625fac8ddd7f3cd5f8f03af3fb0f694004da5b2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27DDB 14468 bytes
font_03_sfnt_off0002a892.bin
c996a1bae430ca54dc6a7b4176f21db66b249daa479d9301c085255328dda8ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A892 6880 bytes
font_04_sfnt_off0002bc78.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC78 6084 bytes
font_05_sfnt_off0002cc0d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC0D 3752 bytes

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