Malicious PDF — malware analysis report

Static analysis result for SHA-256 67bc96011767506c…

MALICIOUS

PDF

366.6 KB Created: 2015-08-22 09:05:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 75d8a652c1712ace9640bb772b366418 SHA-1: 0cefe29bddfa4fc75f35d5c0a2adeaae8058e6fd SHA-256: 67bc96011767506c943f343aa0b36b12412e9d4f1c08c60d8461012bc326c6ca
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8992878-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8992878-0
  • 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+%D0%B8%D0%B3%D1%80%D1%83+%D1%81%D0%BD%D0%B0%D0%B9%D0%BF%D0%B5%D1%80+%D1%86%D0%B5%D0%BD%D0%B0+%D0%BF%D0%BE%D0%B1%D0%B5%D0%B4%D1%8B+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674490_pezho_206_sedan_instrukciya_po_yekspluatacii_chitat_onlayn.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674508_igra_blickrig_3_skachat_torrent_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674514_shporuy_po_istorii_egye_2015.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000575f3.bin
2d11d15bf39b0c725cf394a33c0d189bc8f7ef14e8223e2942669d29aba35484		 pdf-font-stream PDF embedded font (sfnt) at offset 0x575F3 8280 bytes
font_01_sfnt_off00058dbc.bin
f6cd48fe9dc2896518c4ce02c1ba3f781b7bdf2c18b55db11f74c1c9ec7c3a53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58DBC 14200 bytes

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