Malicious PDF — malware analysis report

Static analysis result for SHA-256 d74945b5b0ebfdbc…

MALICIOUS

PDF

357.1 KB Created: 2015-08-22 09:03:24 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c40969006db4a7f1f9af1977b0d2370e SHA-1: 4971c395628c1660a14e64af03548c3a8821860f SHA-256: d74945b5b0ebfdbcee147c75d5ae69b2f4912463524a3bef8a43aaf625fc7992
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. This suggests the document is designed to lure users to a harmful website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+1+7+10+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%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//4674/4674549_trudovoy_kodeks_rk_2015_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674577_skachat_kartuy_navitel_dlya_windows_ce_60_2013_torrent.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054e87.bin
f4bc04026bcf63b95fa4d3d05456d001574850da3ba36b359d0f1e014a3e71b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54E87 8624 bytes
font_01_sfnt_off000566ee.bin
a70af6ee00bbc019509d307aeed357550a91aa4674d9e5d209c5dfbc3af135d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x566EE 14700 bytes

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