Malicious PDF — malware analysis report

Static analysis result for SHA-256 1438fa67e8b97182…

MALICIOUS

PDF

363.0 KB Created: 2015-08-28 00:06:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 58c271cf99af3bd04ff7388c66e5edb7 SHA-1: 2e031a378a1d944ed937676f6dd8f8e08d2dd70c SHA-256: 1438fa67e8b971825a1d65de2baf4335359197124f0d3f0b6ba00003851a74ca
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by an ML classifier and contains a link to known malicious infrastructure. The embedded URL `http://botcraftman.ru/...` is identified as a malicious redirector, suggesting the document's purpose is to lure users to a compromised or malicious site. No scripts were extracted, but the presence of a malicious link is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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%8E%D1%80%D0%B8%D0%B4%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B5+%D1%82%D0%B5%D0%BA%D1%81%D1%82%D1%8B+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B3%D0%BB%D0%B8%D0%B9%D1%81%D0%BA%D0%BE%D0%BC+%D1%8F%D0%B7%D1%8B%D0%BA%D0%B5+%D1%81+%D0%BF%D0%B5%D1%80%D0%B5%D0%B2%D0%BE%D0%B4%D0%BE%D0%BC&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787962_skachat__besplatno__igruy_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788188_gta__5__igrat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788382_trenirovochnaya__karta__dlya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056a53.bin
aca355cd1b6609b0b11926895dd69d91b381223879944ab9b2be186b61812b86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56A53 8060 bytes
font_01_sfnt_off00058180.bin
f31c428d9e3740f221f35d9c0a9d9e88b475e2c0610705a14303c0006d7e89f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58180 13440 bytes

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