Malicious PDF — malware analysis report

Static analysis result for SHA-256 280cc87bf15ad9f0…

MALICIOUS

PDF

351.1 KB Created: 2015-08-28 11:40:59 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9f976eb5d6579a42fd514973e01d0215 SHA-1: 7565fe704ce3a4840e0a3bcee4ad39715d8e0125 SHA-256: 280cc87bf15ad9f038dc81228171c7fe1473a126e3e247b782fafa89736b7db4
90 Risk Score

Malware Insights

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

The PDF contains an embedded link to a known malicious redirector, botcraftman.ru. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body was heavily obfuscated.

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=%D1%80%D0%B0%D1%81%D0%BF%D0%B8%D1%81%D0%B0%D0%BD%D0%B8%D0%B5+%D0%BA%D0%B0%D1%82%D0%B0%D0%BC%D0%B0%D1%80%D0%B0%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B0%D0%BF%D0%B0+%D0%BA%D0%B5%D1%80%D1%87%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802449_skachat__film__mstiteli_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802550_raspisanie__dvizheniya__tramvaev_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802565_skachat__spavn__dlya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053ac5.bin
f87da523758269356ed115eb1572a8bb49c9531d4815283b873d58337a71889c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53AC5 7468 bytes
font_01_sfnt_off00055039.bin
8d643c1b7b30bff7868d9cc96cb8ff09f4f61afd78dbbee50627114ea6b73c99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55039 13972 bytes

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