Malicious PDF — malware analysis report

Static analysis result for SHA-256 67933438ff5145e4…

MALICIOUS

PDF

387.5 KB Created: 2015-08-21 09:29:00 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c22359927d2d4d73e31bba576ff45833 SHA-1: 5141eb9acbcf4333e7fbabdcad986a335bf61798 SHA-256: 67933438ff5145e4f51f154944dd3935c03cef626d0eec04ec2b9337b5b65e7e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is indicative of a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of a malicious URL within the document structure strongly suggests an intent to compromise the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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%B8%D0%B3%D1%80%D0%B0+%D0%BE%D1%85%D0%BE%D1%82%D0%B0+2014+%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+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC+%D0%BD%D0%B0+%D0%BF%D0%BA&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654722_vyacheslav_dobruynin_diskografiya_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654717_skachat_sabvey_serf_na_nokiya_asha_311.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654907_tehnologiya_2_klass_rogovceva_yelektronnoe_prilozhenie_skachat.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005cb5f.bin
a673d9e44c7f5114bb3987a66f2bac6285bbe216da02ad191ba43463d00c6752		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB5F 8676 bytes
font_01_sfnt_off0005e45a.bin
3e815efcbcc47f8fe44dba8d35e083a4ae9276ba5fb5e981a3f0d34984f7062c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E45A 13028 bytes

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