Malicious PDF — malware analysis report

Static analysis result for SHA-256 0af8fbdce9df3229…

MALICIOUS

PDF

299.0 KB Created: 2015-08-28 11:37:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9c228d691a60c5bb4c968307431c20ae SHA-1: 7a37b531518d6ca3585cd883e64a642ea0ed1b12 SHA-256: 0af8fbdce9df3229137f5fc692fce6917080266bc9e950dc984a0207abcedcf9
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'http://botcraftman.ru/'. This suggests the document's primary purpose is to lure the user to this malicious site. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence score support a malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7288

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%BD%D0%B0%D1%85%D0%BE%D0%B4%D0%B8%D0%BB%D0%BA%D0%B8+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802372_skachat__igru__kak_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802456_skinuy__po__nikam_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802440_kak__otklyuchit__cenzuru_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00046b19.bin
3af689b3febc0334d606d971496529680d7dff1f5836cb548b41b3ffd8d1c07c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46B19 7796 bytes
font_01_sfnt_off000481df.bin
2b79e5f4865dfcffc13511462eb8c23a9e2fc5cbcfdb3517e2f25f250694b6b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x481DF 13572 bytes

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