Malicious PDF — malware analysis report

Static analysis result for SHA-256 925f9838d224bedd…

MALICIOUS

PDF

340.8 KB Created: 2015-08-24 00:43:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ee1bc9c5da3939699bd11397528fd60a SHA-1: 7d36f4b58f3e1bfef30ca6db1d725e577ad477ff SHA-256: 925f9838d224bedd1b8465880c684e05abe7c41111ed3b36d8a399fd12f4f404
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 assigned a high probability of maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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=%D1%81%D1%82%D0%B5%D0%BF%D0%BC%D0%B0%D0%BD%D0%B8%D1%8F+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC+%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//4694/4694236_kuyrguyzcha__goroskop_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694387_zebra__dlya__pisma_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693929_ajax_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00050d76.bin
f3409a9edbe8e6c9d315508838e4aad981ce77bca4495924e5567cc5e47d4459		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50D76 7960 bytes
font_01_sfnt_off000524c8.bin
8eafedb6d658423e68667ca4d5bc028cc9b73dfebe6b48186261b00d90d895e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x524C8 15240 bytes

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