Malicious PDF — malware analysis report

Static analysis result for SHA-256 151339dc950e2adf…

MALICIOUS

PDF

368.1 KB Created: 2015-08-21 09:30:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 3032a0ba622e4b56c93226be9526d557 SHA-1: c051bbdf6804503e649adf506fd501aa2cc74b4e SHA-256: 151339dc950e2adfcdb515db2d0e1320c7c0517059b0e4008b823379c2380390
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, http://botcraftman.ru/, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the presence of a malicious URL suggests the document is designed to lure the user to a compromised site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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=190851+%D0%A1%D0%B0%D0%BD%D0%BA%D1%82+%D0%BF%D0%B5%D1%82%D0%B5%D1%80%D0%B1%D1%83%D1%80%D0%B3+%D0%B4%D1%82%D0%B8+%D0%BF%D0%B8%D1%81%D1%8C%D0%BC%D0%BE+%D0%B7%D0%B0%D0%BA%D0%B0%D0%B7%D0%BD%D0%BE%D0%B5&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654819_navitel_dlya_windows_ce_60_torrent_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654848_itogovuyy_diktant_po_russkomu_yazuyku_4_klass_shkola_2100.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654816_dzheronimo_stilton_skachat_torrent.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057733.bin
34d8b664456643157d166a69cb7a6bf7b289ebc961c90ad93773cd160015a336		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57733 9012 bytes
font_01_sfnt_off000590ee.bin
7ac81bf672a1c271d78fd38fdf1464fb75ae7fa3bde3c688cc44730ac2a2f281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x590EE 15308 bytes

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