Malicious PDF — malware analysis report

Static analysis result for SHA-256 1166c300a87d94ed…

MALICIOUS

PDF

365.8 KB Created: 2015-08-19 14:03:29 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: e3da40c964a60eb337441570c963b1bd SHA-1: 35e7429a2165058750a8655285c7ffed395fc329 SHA-256: 1166c300a87d94edad587ac6dd876362f55097c09fe5af81ba1f1ff4ed44aaf3
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links pointing to known malicious redirector infrastructure, specifically http://botcraftman.ru/. This indicates an attempt to lure users to a potentially harmful site. The ML classifier and ClamAV detection further support its malicious nature, classifying it as a PDF dropper.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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-8733130-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8733130-0
  • 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=%D0%BC%D0%B0%D1%80%D0%BA%D0%B5%D1%82%D0%B8%D0%BD%D0%B3+%D0%B2+%D0%B8%D0%BD%D0%B4%D1%83%D1%81%D1%82%D1%80%D0%B8%D0%B8+%D0%BC%D0%BE%D0%B4%D1%8B+%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//4626/4626474_kak_aktivirovat_kod_produkta_origin_dlya_fifa_15.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626599_skachat_gta_san_andreas_na_android_bez_kesha_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626649_odnolineynuye_shemuy_yelektrosnabzheniya_v_visio.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005701b.bin
a12c824d168e0550231a9c15bc67af2b2a553f765aa0216719e5a2751ea0e6e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5701B 7908 bytes
font_01_sfnt_off000586cc.bin
b69593f80027bb9ecf61a8066b560cd2b44371e2d895671bcc4236a276b0d7af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x586CC 15656 bytes

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