Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bb169836c5cad5e…

MALICIOUS

PDF

353.7 KB Created: 2015-08-28 11:43:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ddf7c6144892c2eb06161116b86e21c8 SHA-1: abd8bf9c04e8575c752cb4fdf64a3552c9d02a51 SHA-256: 7bb169836c5cad5e3fd733a0afadf9133b7c4eb2a9f8e0100323a2915d1b5178
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, http://botcraftman.ru/, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the PDF structure and the malicious URL suggest it is designed to lure users to a harmful site, potentially for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9897

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%BF%D0%BE%D0%BB%D0%BD%D0%BE%D0%B5+%D0%BF%D1%80%D0%BE%D1%85%D0%BE%D0%B6%D0%B4%D0%B5%D0%BD%D0%B8%D0%B5+fallout+new+vegas&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802566_domennuye__sluzhbuy__active_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802393_kak__sdelat__vuykidnoy_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802608_instrukciya__po__tb_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053d03.bin
d7fba2a12f9209a598d9463af4a43990d29674f63a1133d88f164fd3c20b597f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53D03 10296 bytes
font_01_sfnt_off000559dc.bin
47ded10571323e7fd6065b1a0275edd9452ad86ef4809c14845161131dbbe501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x559DC 14948 bytes

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