Malicious PDF — malware analysis report

Static analysis result for SHA-256 c34ede9edbaf5032…

MALICIOUS

PDF

357.4 KB Created: 2015-08-22 09:30:08 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: a09f4a853de372ff4ee1748691a4248e SHA-1: 5e2ff717265e9b252571c11cf995200e38ee19d7 SHA-256: c34ede9edbaf5032f45aaf0dc97d3a4e1d1b874ce1f464aa5176c184d89fe79f
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, botcraftman.ru. This indicates an attempt to lure the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence for this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

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=windows+7+home+basic+x64+%D0%BE%D1%80%D0%B8%D0%B3%D0%B8%D0%BD%D0%B0%D0%BB%D1%8C%D0%BD%D1%8B%D0%B9+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674663_skachat_igru_snayper_cena_pobeduy_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674839_skachat_temuy_dlya_samsung_gts5230_la_fleur.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674595_mount_and_blade_warband_prophesy_of_pendor_3611_skachat_torrent.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000545d3.bin
5fe778ed39d3a4277ee451fba6061975d0c9d85a51e4c7dc29eea8f3231a4caa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x545D3 10392 bytes
font_01_sfnt_off00056245.bin
85a9fde7796272564269682b8e2b5e08d799ca08d86d720630b5445b329cc41c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56245 17320 bytes

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