Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4d0c8338c048afc…

MALICIOUS

PDF

360.5 KB Created: 2015-08-19 13:50:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 2f555157209b5c525262101c3fd7fcdb SHA-1: 21ca773e4e7266cce12cebea27a9542dc2af915a SHA-256: b4d0c8338c048afc3ef581f6b27a8cecad4f4f3fa3593c42b633c8c1b41bc9c8
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link and a machine learning classifier. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. This suggests the document's primary purpose is to lure users to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-7622712-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7622712-0
  • 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%D1%86%D0%B5%D0%BD%D0%B0%D1%80%D0%B8%D0%B9+%D0%BA%D0%BE+%D0%B4%D0%BD%D1%8E+%D0%BC%D0%B5%D0%B4%D0%B8%D0%BA%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626539_gde_vzyat_kod_produkta_na_origin_fifa_15.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4496/4496723_pl_sql_developer_samouchitel.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626502_skachat_simulyator_makdonaldsa_cherez_torrent_kak_u_frosta.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055c7a.bin
0fd1fc21832f9cd38b109a5e90eca43c57aeef56c7c976e1895550ee682d2bb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55C7A 7732 bytes
font_01_sfnt_off000572c6.bin
223c794f9f596c63cfaf9a9da8941bd8ba5d206e7eb93a8fbf063a758210447f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x572C6 15672 bytes

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