Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3c836a83410b41a…

MALICIOUS

PDF

184.9 KB Created: 2015-08-08 10:06:21 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 03ffe4aada5e1e4d369594ad5cf20952 SHA-1: 488eef02f8304da97076d7e56be2e1f8645768dc SHA-256: b3c836a83410b41aec643457046e9bf26c118da1925a4aa835812eed56b76d45
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 an attempt to lure the user to a site that likely hosts malware or phishing content. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

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%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+windows+8+rus+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+64+bit&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384667_oformlenie_komnatuy_otduyha_v_shkole.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384424_geometriya_9_klass_atanasyan_gdz_rabochaya_tetrad.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384991_proverit_shtrafuy_gibdd_s_foto.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a447.bin
c25208897fb5a275b47ab7035b59f8fb884e3b1d091d8ad8f07d8467a1f16c88		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A447 7328 bytes
font_00_sfnt_off00023e70.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E70 3556 bytes
font_01_sfnt_off00024bf3.bin
3de0298aa0ab654805b15c695017779558fadb98e2b65062730a0a88570d3dfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24BF3 14196 bytes
font_02_sfnt_off00027892.bin
2cdd379b5f06ff13ff1292718a54ddbfea9d0329092f6682aba3a57232901498		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27892 14780 bytes
font_04_sfnt_off0002b9c6.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9C6 6084 bytes
font_05_sfnt_off0002c95b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C95B 3752 bytes

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