Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f34fbb9cfd76665…

MALICIOUS

PDF

344.1 KB Created: 2015-08-28 05:14:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d72c03ee1a28c9b45eed9d2881b40c62 SHA-1: 224de1fc8a9f114e4252cef584cd6c00ca890c3f SHA-256: 8f34fbb9cfd76665cc2345db8870217e5b5e25f3a9d2b639687644fd848e7edb
92 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence for this assessment.

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+%D1%87%D0%B8%D1%82%D1%8B+%D0%BD%D0%B0+%D0%B8%D0%B3%D1%80%D1%83+%D0%BB%D0%B5%D0%B3%D0%B5%D0%BD%D0%B4%D0%B0+%D0%BE+%D0%B2%D0%B0%D0%BC%D0%BF%D0%B8%D1%80%D0%B5&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4792/4792965_shema__salona__boing_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4792/4792603_videokurs__virtualnaya__avtoshkola_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788208_dogovor__kupliprodazhi__doli_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00051f03.bin
036dc92cedd2b52b399f0b0e72249d598e12aea98c0919921ea5606bc9e9fae9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51F03 8148 bytes
font_01_sfnt_off000535e5.bin
6b3cf10ab3612f4a9ce470b3cd16979464cb9e18724b8c5fe6091a41f491dd80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x535E5 13528 bytes

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