Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdd39cb7452cab99…

MALICIOUS

PDF

369.1 KB Created: 2015-08-28 11:44:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 01953151d38a13930989025d8efac7ea SHA-1: f4de2842f66898dd63ff704f27473aab6a022e75 SHA-256: bdd39cb7452cab99106aa179b6e0415af948a3798e0729f08f62b477f5b61f00
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru. This indicates the file's primary purpose is to lure users to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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%D1%82%D1%8C+%D0%B2+%D0%B3%D1%82%D0%B0+%D0%BA%D1%80%D0%B8%D0%BC%D0%B8%D0%BD%D0%B0%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F+%D1%80%D0%BE%D1%81%D1%81%D0%B8%D1%8F+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802610_skachat__rep__minus_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802579_pervuyy__mstitel__drugaya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802401_gta__mta_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005804b.bin
54c268a1b48cad5069d5eec67f5abe9b43812e46ac20baba7565acbe0fed88af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5804B 8396 bytes
font_01_sfnt_off00059881.bin
0d99b7527a0e30d7f03bbd29f87a1a9bd6f99f602496be8d361299147ea75b22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59881 14244 bytes

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