Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e4d102e83aeed52…

MALICIOUS

PDF

360.9 KB Created: 2015-08-24 00:31:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: e77df90bc2113dfb82673ee242b58d4d SHA-1: 982351d46f308b294d823e470376b33c8b7358e8 SHA-256: 8e4d102e83aeed52170a416cfa451f2dca5d14030b6e29932a53a429b70fbcd2
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, 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 presence of embedded URLs and the heuristic firings strongly suggest this document is designed to lure users to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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=dreamscenes+enabler+12+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694320_ktp__po__matematike_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693598_zvuki_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694181_navigator__explay__pn975_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055a02.bin
963fa4b3423e6ed95e5d6c9ae5673e6a7a993265c255598f04a17d0b9d03fda8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55A02 8540 bytes
font_01_sfnt_off000571c0.bin
3582b0bea4f4425475d754e0bdc7b9d2c89c2de3260ed30173f8be266fe71e4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x571C0 17036 bytes

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