Malicious PDF — malware analysis report

Static analysis result for SHA-256 baa35e756184fdd4…

MALICIOUS

PDF

365.9 KB Created: 2015-08-21 09:21:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 099dd1b98030a252c8ff7540f24a941b SHA-1: b21cc06df069cf64d0d0020ed11f95fd3a87e943 SHA-256: baa35e756184fdd4eb812dc6950aaf014b74cbd4d8e3598e00e7d66f6bb899ae
90 Risk Score

Malware Insights

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

The PDF contains an embedded link to a known malicious redirector infrastructure at botcraftman.ru. This indicates the document is designed to lure users to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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%93%D0%B0%D0%B4%D0%B0%D0%BD%D0%B8%D0%B5+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD+%D0%BA%D0%BE%D0%B3%D0%B4%D0%B0+%D1%8F+%D0%B2%D1%81%D1%82%D1%80%D0%B5%D1%87%D1%83+%D1%81%D0%B2%D0%BE%D1%8E+%D0%BB%D1%8E%D0%B1%D0%BE%D0%B2%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654727_mount_and_blade_krestonoscuy_put_k_iskupleniyu_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654755_chertezh_pluga_zuykova.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654764_chituy_na_igru_vkontakte_music_wars.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056bbb.bin
2dfde4259bd2d4f04343a478e3e8db1c4e35b0442ad221a46fefe47ba55c9a98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56BBB 10348 bytes
font_01_sfnt_off000587ba.bin
b0d6010c88d5cbcbaa1c88953545a9e36cc2116cc16f674b669caee7a8af1917		 pdf-font-stream PDF embedded font (sfnt) at offset 0x587BA 15908 bytes

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