Malicious PDF — malware analysis report

Static analysis result for SHA-256 59613935360a3d05…

MALICIOUS

PDF

185.8 KB Created: 2015-08-05 13:32:11 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e853755eb3726abd055842fb9c961cc7 SHA-1: f3121d1ad93b055bd611f1602fef58a1c9861011 SHA-256: 59613935360a3d05354176aa34cfebec93152e64e8ea81ca032106849123a371
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence for a phishing or malware distribution attack pattern.

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-7526602-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7526602-0
  • 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%A2%D0%BE%D0%BC+%D0%BB%D1%8E%D0%B1%D0%B8%D1%82+%D0%B0%D0%BD%D0%B6%D0%B5%D0%BB%D1%83+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B4%D0%BB%D1%8F+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304541_muzuyka_kantri_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304506_horoshie_pesni_skachat_besplatno_mp3.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304516_tablica_lukinuyh_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024418.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24418 3556 bytes
font_01_sfnt_off0002519b.bin
c9d7be7910c68d1ffd00b73c93dc65ed98fad642693da4aa01098f57babcd013		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2519B 14224 bytes
font_02_sfnt_off00027e22.bin
2c55dad4c1ee557ce117bdcdfcc221091230b6f73892741738414d5247909151		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E22 14468 bytes
font_03_sfnt_off0002a8d1.bin
6efb0993b1f1b729e416b5b9773f210f477fb95fc117af815ceb7ec46d57a26c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8D1 7080 bytes
font_04_sfnt_off0002bd58.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD58 6084 bytes
font_05_sfnt_off0002cced.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCED 3752 bytes

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