Malicious PDF — malware analysis report

Static analysis result for SHA-256 72e971cd40f8d251…

MALICIOUS

PDF

361.3 KB Created: 2015-08-25 09:15:48 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 0959430aaf4a0bb7c4e8880d43607dd0 SHA-1: 3ece9081b6ceb711f43fe1a2921378535586c517 SHA-256: 72e971cd40f8d2515ba04b0c026528542f1790671870972339eb8dee84a54c54
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 likely intended to deliver a secondary payload. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of a malicious URL strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%87%D0%B8%D1%82%D0%B5%D1%80%D1%81%D0%BA%D1%83%D1%8E+%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D1%83+%D0%B4%D0%BB%D1%8F+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725782_pochta__rossii__doverennost_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725309_programma__dlya__otkruytiya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725186_vorobeva__tochechnaya__rospis_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005602a.bin
cd7b50e5d1fade0acdaec5a834e25abdb883bda35ba640c777ad81ade0937478		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5602A 9276 bytes
font_01_sfnt_off0005793a.bin
abbfd02bab7af4a39fbf3c9cd30200c50fa49f4424e1c894d927cb3f4964bc18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5793A 13976 bytes

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