Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f158ab9e027c7d6…

MALICIOUS

PDF

358.5 KB Created: 2015-08-24 00:18:29 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f665852e32c67148b275e5da51614c77 SHA-1: 591160e6c677ec09aa84da5495fc7fd55379ad75 SHA-256: 5f158ab9e027c7d67bd11919bad63cbe70deac46e6c6a4cddb15aa9381f28328
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. This suggests the document is designed to lure users to a malicious site, likely for phishing or malware distribution. No scripts were extracted, but the presence of a malicious URL is a strong indicator of malicious intent.

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%B0%D0%B2%D1%82%D0%BE%D0%BF%D1%80%D0%BE%D0%B1%D0%B5%D0%B3+%D1%87%D0%B5%D1%80%D0%BD%D0%BE%D0%B5+%D0%BC%D0%BE%D1%80%D0%B5+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%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//4693/4693865_pcradio__premium__kod_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693708_signalizaciya__mangust__shema_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693344_programma__lovi__v_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055516.bin
1052aebd11bb28c330d45d94b50f8f826142a486eed75ac6e1f334a235dad10b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55516 8776 bytes
font_01_sfnt_off00056d80.bin
2836fac7fda524362e89b5b49a9bc46329bfda80e6024416d47159a2422a048e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56D80 14956 bytes

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