Malicious PDF — malware analysis report

Static analysis result for SHA-256 377b94412944a102…

MALICIOUS

PDF

378.5 KB Created: 2015-08-26 09:50:27 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 078c5b04b7b473538d44a73f62c29d64 SHA-1: 4f8481e85db303964fe1181d25d260c2aaeb6a7e SHA-256: 377b94412944a102733b6fe6ee2287cf701ee7ae556892f7a62088f89dda14e9
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 heuristic indicates the document is designed to lead the user to a potentially harmful site. The ML classifier also strongly flagged this PDF as malicious. The primary intent appears to be directing users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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%BF%D0%BE%D1%8F%D1%81%D0%BD%D0%B8%D1%82%D0%B5%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F+%D0%B7%D0%B0%D0%BF%D0%B8%D1%81%D0%BA%D0%B0+%D0%BA+%D0%B1%D1%83%D1%85%D0%B3%D0%B0%D0%BB%D1%82%D0%B5%D1%80%D1%81%D0%BA%D0%BE%D0%BC%D1%83+%D0%B1%D0%B0%D0%BB%D0%B0%D0%BD%D1%81%D1%83+2013+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86+%D1%83%D1%81%D0%BD&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751827_skrepka__pomoschnik_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751813_skayrim__kod__na_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751744_ustanovit__prilozhenie__vkontakte_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005a12f.bin
3984f9affc2be76a64ddeda8ad793fc0c632b6eb340c5c57a54086b468cb3964		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A12F 9428 bytes
font_01_sfnt_off0005bce7.bin
96ea2434f8ffa2e76efaf0cb513ecb0cae1a46bd800ecacf9f0f5e9d2bd9e280		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BCE7 14136 bytes

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