Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5db00c1c036aa05…

MALICIOUS

PDF

383.5 KB Created: 2015-08-26 10:15:54 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d03b005449b94775ec3bae7956983f1d SHA-1: b7924af925c467a0c9e788d40647395b5aedacc9 SHA-256: c5db00c1c036aa057ccae00678a7860cb3a7fba61dc41fe895aa17a65c73935c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics as malicious, specifically for containing a link to known malicious redirector infrastructure. The embedded URL `http://botcraftman.ru/...` is identified as a malicious redirector. The document body is heavily obfuscated and does not provide clear textual clues, but the presence of the malicious link is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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%87%D0%B8%D1%82+%D0%BA%D0%BE%D0%B4+%D0%BD%D0%B0+%D0%B3%D1%82%D0%B0+%D0%BA%D1%80%D0%B8%D0%BC%D0%B8%D0%BD%D0%B0%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F+%D1%80%D0%BE%D1%81%D1%81%D0%B8%D1%8F+%D0%BD%D0%B0+%D0%BC%D0%B0%D1%88%D0%B8%D0%BD%D1%8B+mmohelper&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751659_zayavlenie__na__povuyshenie_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752335_programma__diagnostiki_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752333_zippo__nebo__chto_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b9e1.bin
383e5b68730908f8f403c296f38463870e626be166312626a53c3ee781c653fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B9E1 8972 bytes
font_01_sfnt_off0005d2af.bin
fdd038d4a5fb91e586d31ee7b003491b84297573707c2ff39abcc4775277a23d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2AF 14108 bytes

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