Malicious PDF — malware analysis report

Static analysis result for SHA-256 01c1e3fefded32b7…

MALICIOUS

PDF

186.4 KB Created: 2015-07-25 08:43:37 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b85dedb3e6e98b04ccab11aa16bd35a7 SHA-1: 75071950186110a9eb6012cd4a7e65513ed16021 SHA-256: 01c1e3fefded32b71a9774067f85e042f1de882db6c03c9d69f5934658cdca4e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a malicious redirector link to botcraftman.ru, which is flagged by multiple heuristics as malicious. The ClamAV detection 'Pdf.Dropper.Agent-7524240-0' further confirms its malicious nature. The ML classifier also strongly indicates maliciousness. The primary attack vector appears to be exploiting the PDF viewer to redirect the user to a potentially harmful website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7524240-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7524240-0
  • 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%BD%D0%BE%D0%B2%D1%8B%D0%B9+%D1%80%D0%B0%D1%81%D0%BA%D1%80%D0%BE%D0%B9+%D0%BF%D1%80%D0%BE100+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4196/4196438_blank_zayavleniya_na_registraciyu_avtomobilya_v_gibdd_2014.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4196/4196811_skachat_odnoklassniki_besplatno_na_kompyuter_dlya_windows_8.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184307_skachat_programmu_dlya_nastroyki_sabvufera.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_off000246b5.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x246B5 3556 bytes
font_01_sfnt_off00025438.bin
4196008a52ec45dfdbc71641bb21d9c45faedf4c1ab4a528523ec29a86332a6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25438 14452 bytes
font_02_sfnt_off00028164.bin
68d81bfc0731b678cc61d9deeeec25228267babe5c476d196e8bab4f6dd90ff2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28164 14468 bytes
font_03_sfnt_off0002ac16.bin
8b0d37271d51f76f2ccda1914bc0a11dea93440b2115965dab63780f181f50f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC16 6884 bytes
font_04_sfnt_off0002bff2.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFF2 6084 bytes
font_05_sfnt_off0002cf87.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF87 3752 bytes

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