Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cdc9ae15c13949f…

MALICIOUS

PDF

345.5 KB Created: 2015-08-22 09:08:59 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 2ecbd6de0ce944cd886ee991fbdeb265 SHA-1: 810403cb6c0caab5c55c3eef9c8e7e1289c26809 SHA-256: 0cdc9ae15c13949fcdb70e8d12ae9aef6385d74e203bd55d5ce366d4772d6238
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'http://botcraftman.ru/'. The document body, though heavily obfuscated, contains text that appears to be a lure for downloading 'Double trader 71'. The ML classifier also flagged this PDF with high confidence. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

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=double+trader+71+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674639_skachat_windows_7_nachalnaya_32_bit_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674594_pasyans_kosuynka_skachat_besplatno_dlya_windows_7.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674580_skachat_apple_mobile_device_support.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00051ad9.bin
f577e5417689ccff8b04697c6e396a4a2dfc473f77a6855176f3a3fb806416a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51AD9 8948 bytes
font_01_sfnt_off00053414.bin
3d0bc4eb30ea52bcb0b196787a3a766acda64af072b819699da4eca7cc5a8409		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53414 16600 bytes

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