Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f4c03ccbc390cb0…

MALICIOUS

PDF

371.5 KB Created: 2015-08-28 18:38:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 07cf3bb9f0cf0e70b1e393a698d40ce9 SHA-1: f55fa88dd955edb0f04d8522e901389095eece9e SHA-256: 1f4c03ccbc390cb0235970339af3a320ddacddb9c971c6c6e24eed39f17e159d
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'http://botcraftman.ru/'. This indicates the document's primary purpose is to redirect the user to a potentially harmful external resource. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was unreadable.

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=%D1%81%D1%82%D0%B8%D1%85%D0%B8+%D0%BF%D1%83%D1%88%D0%BA%D0%B8%D0%BD%D0%B0+%D0%BF%D1%80%D0%BE+%D0%BE%D1%81%D0%B5%D0%BD%D1%8C+5+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+%D0%B3%D1%80%D1%83%D1%81%D1%82%D0%BD%D1%8B%D0%B5&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4810/4810056_skachat__windows__7_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809896_skachat__forsazh__5_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809367_korsaruy__kazhdomu__svoe_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00058698.bin
27e082c1678b540963d819b2100fa9029e482cf721e7c1852ea22c97b5b750fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58698 8540 bytes
font_01_sfnt_off00059ef7.bin
025e74becbe8662b7855d6926b82ddcedf3a49a6730e28050caaecb08e0c868e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59EF7 15336 bytes

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