Malicious PDF — malware analysis report

Static analysis result for SHA-256 08de350335150fdc…

MALICIOUS

PDF

355.1 KB Created: 2015-08-19 12:25:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 6f312216516920bbc194d7b0014ba213 SHA-1: 0bf6c0a795479386c608ed1b049907c8c38dc438 SHA-256: 08de350335150fdc184b794264a168729886cdcda4f79f69f699b32844997df6
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL `http://botcraftman.ru/...` is the primary indicator of malicious intent. While no scripts were extracted, the presence of this malicious link strongly suggests the document is designed to lure users to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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%BA%D0%BE%D0%B3%D0%B4%D0%B0+%D0%B1%D1%83%D0%B4%D1%83%D1%82+%D0%B8%D0%B7%D0%B2%D0%B5%D1%81%D1%82%D0%BD%D1%8B+%D1%80%D0%B5%D0%B7%D1%83%D0%BB%D1%8C%D1%82%D0%B0%D1%82%D1%8B+%D0%B3%D0%B8%D0%B0+%D0%BF%D0%BE+%D0%BC%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B5+2015&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4496/4496725_skachat_spletnica_2_sezon_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626520_dosrochnuyy_egye_po_fizike_2015_zadaniya.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626495_rezultatuy_gia_po_matematike_2015_volgograd.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000545ab.bin
9164f4a454abe124e759fe194a5325c3983f0a8755de88dd038bb9835084d15d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x545AB 8624 bytes
font_01_sfnt_off00055f0f.bin
fac94531513479afac33b23628b21afde02429767c8cbdfdde9c93300e750bf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55F0F 14168 bytes

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