Malicious PDF — malware analysis report

Static analysis result for SHA-256 3effaa9709755936…

MALICIOUS

PDF

357.1 KB Created: 2015-08-29 11:21:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b7ab2bbbd049d18504f008ff155f7e53 SHA-1: a8c83f2d4f2bb4e1e91c533b86b079ca25d801eb SHA-256: 3effaa97097559367a81a4d53d7e6513636a8409dd78d46a97df834f54fd2f8b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a malicious redirector link pointing to 'http://botcraftman.ru/'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. While no scripts were explicitly extracted, the PDF structure and the malicious URL strongly suggest an attempt to compromise the user through a phishing or malware delivery vector. The ML classifier also flagged this as highly malicious.

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=trackmania+2+canyon+%D0%BA%D0%BB%D1%8E%D1%87&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830127_zagadki__danetki__s_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830272_scenariy__60letnego__yubileya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830042_zhivuye__oboi__goluyh_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054981.bin
36bfa08b628a2da2e402373f9ccae9d29dfcf5c9aff08e7b2c911ae28ad4d27f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54981 9268 bytes
font_01_sfnt_off00056312.bin
2ca9a85e6bb6dff29fdd6138d185645b35b51fc3d4c522fa417143c087a22316		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56312 16404 bytes

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