Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5ada006a71cc383…

MALICIOUS

PDF

354.0 KB Created: 2015-08-28 17:27:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 1e23775a99d05556d73c1517938ad0fb SHA-1: 6beb74e38ddf39f8e0d24fbb796d4e740f7920ff SHA-256: a5ada006a71cc383f2a76734db52c03fdc2b87406bf3515403ae921ed5540382
90 Risk Score

Malware Insights

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

The PDF document was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. This suggests the document is designed to lure users to a harmful website.

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%BC%D0%BE%D0%BB%D0%BE%D0%BA%D0%BE%D1%81%D0%BE%D1%81%D1%8B+6+%D1%81%D0%B5%D0%B7%D0%BE%D0%BD+%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/7//4809/4809140_skript__udaleniya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809125_deniskinuy__rasskazuy__kratkoe_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809135_skachat__besplatno__film_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054459.bin
e09b3999e14c92ecd58934725db02315a0641fc7d349173991bbe88fd0404b83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54459 8440 bytes
font_01_sfnt_off00055c8f.bin
b61665b160e90abd4499f131911bccde376ba48741b8f8f9711b557628112577		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55C8F 13804 bytes

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