Malicious PDF — malware analysis report

Static analysis result for SHA-256 fad2f5c7c0d52b9d…

MALICIOUS

PDF

184.7 KB Created: 2015-07-24 11:46:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f0bdf6f12c54de0e8c68f67654f270fb SHA-1: 7f6b342fb3eb6bafec9758a90275f53e328b0dce SHA-256: fad2f5c7c0d52b9d74dd6d797d25a97117323cc7a2a3b429d566fcd048b89506
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link and a high ML score. The embedded URL 'http://botcraftman.ru/?lip&keyword=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+catwang+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80&charset=utf-8' is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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-8790597-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8790597-0
  • 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+catwang+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185186_raspisanie_prigorodnuyh_yelektrichek_krasnoyarsk.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191450_skachat_igromaniya_iyul_2015_pdf.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191706_fate_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023e3a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E3A 3556 bytes
font_01_sfnt_off00024bbd.bin
14a73da3f35b4ab43d03aa59855e2abf6015ae6fec6a65d36597e25f7f016dd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24BBD 14588 bytes
font_02_sfnt_off00027953.bin
dba7f0fbf541ade5116c0944117331746da9001ce467cfa8d4b36d8994832b88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27953 14652 bytes
font_03_sfnt_off0002a494.bin
89ad0a5b787e8fe7760458cf00a32c836bca091ae498911077e26ec7db02bbde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A494 7020 bytes
font_04_sfnt_off0002b8fc.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B8FC 6084 bytes
font_05_sfnt_off0002c891.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C891 3752 bytes

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