Malicious PDF — malware analysis report

Static analysis result for SHA-256 23eb3d1a694a3c40…

MALICIOUS

PDF

367.0 KB Created: 2015-08-21 09:24:10 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 35675f4cd8282db4de55b363eca85bc2 SHA-1: 42630c742bf7d5b691b7c5b391439ca5aa6d33f5 SHA-256: 23eb3d1a694a3c404c3836440fa6dceaf53ad35d65de996154325b4e990c88ef
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple heuristics as malicious, specifically for containing a link to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as malicious infrastructure. This suggests the document is designed to lure users to a harmful website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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%BD%D0%B0%D0%BB%D0%B0%D0%B4%D1%87%D0%B8%D0%BA+%D0%B0%D0%BF%D0%BF%D0%B0%D1%80%D0%B0%D1%82%D0%BD%D0%BE%D0%B3%D0%BE+%D0%B8+%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%BD%D0%BE%D0%B3%D0%BE+%D0%BE%D0%B1%D0%B5%D1%81%D0%BF%D0%B5%D1%87%D0%B5%D0%BD%D0%B8%D1%8F+%D0%B7%D0%B0%D1%80%D0%BF%D0%BB%D0%B0%D1%82%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654744_skachat_mod_tropik_kraft_na_maynkraft_152.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654759_shellexecuteex_sboy_kod_1155.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654678_skachat_multfilm_holodnoe_serdce_2013_cherez_torrent_besplatno.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057637.bin
4818fd94b2db572078b0010db18f199fceb8944b8fa97253ec74eda5c46e4372		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57637 8180 bytes
font_01_sfnt_off00058dd9.bin
0632976bb4268c262fb64589437beb4ace47b04ee2d3a7db76a5a83ef130ea5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58DD9 14928 bytes

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