Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3bd5ef6308874f4…

MALICIOUS

PDF

285.0 KB Created: 2015-08-28 17:26:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f2d4dea8e883f3e9a9149812209cf224 SHA-1: 49ffc1aa6a04f3444845cf962083df40259efdae SHA-256: a3bd5ef6308874f4234ed002d21b6fb8a47735a305a0e5dffd35d2d34e4bc8d9
90 Risk Score

Malware Insights

MITRE ATT&CK
T1200 Hardware Add-in T1071.001 Web Protocols

The PDF file was flagged as malicious due to an embedded link pointing to a known malicious redirector. The ML classifier also indicated a high probability of maliciousness. The primary attack vector appears to be directing the user to the malicious domain http://botcraftman.ru/ for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7019

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%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D1%8B+%D0%B8%D1%81%D0%BB%D0%B0%D0%BC%D1%81%D0%BA%D0%B8%D0%B5&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809127_kontrolnaya__rabota__po_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809119_oe_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809105_skachat__beluyy_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00042ca4.bin
42ddb14c981325889dfa376ddc5da8fa3b492708f563a1ecd82d56e5e284ae87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42CA4 8264 bytes
font_01_sfnt_off000444ae.bin
50eed86136ce71721a8797420b601aa784f7781dd886d5ea595f5710ea4d8875		 pdf-font-stream PDF embedded font (sfnt) at offset 0x444AE 15808 bytes

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