Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ee4c44fe198565a…

MALICIOUS

PDF

355.0 KB Created: 2015-08-20 09:04:00 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: bbb4b9abe83468a2725b2b1b0e4dca81 SHA-1: 48980b9d09da497b3148f1f1387be500e261ebf1 SHA-256: 3ee4c44fe198565acc9ced29830f8d5d39c758591c14bf93ad6744d49b9e5fd5
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated 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 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=%D0%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%B3%D1%80%D1%83+%D0%B3%D1%82%D0%B0+4+%D0%B4%D0%B0%D0%B3%D0%B5%D1%81%D1%82%D0%B0%D0%BD+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639694_vruchenie_attestatov_9_klass_scenariy.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639532_baza_dlya_bruta_4game.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4640/4640287_skachat_generator_klyuchey_dlya_postal_3.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054952.bin
247ce828e67a4a1e653c9a190020ad067fc6e5488dd69becb2e94e19242691b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54952 7932 bytes
font_01_sfnt_off00056006.bin
21b82c07da77df9f937fbd29e281f8b53a7f67a46e17b523c007e2885b39ddb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56006 14396 bytes

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