Malicious PDF — malware analysis report

Static analysis result for SHA-256 196b76198b16029a…

MALICIOUS

PDF

357.9 KB Created: 2015-08-27 11:38:00 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 757eb44a161149b3da39ad2d26691f21 SHA-1: ab7f4330caea15b75446080dcab556c21a8d2201 SHA-256: 196b76198b16029a0ec87295ad496539f6ee4e75f9a6891f7621f3d767c1a16a
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. This indicates the document is likely part of a phishing or malware distribution campaign. No scripts were extracted, but the presence of a malicious URL is a strong indicator of malicious intent.

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=%D0%BF%D1%80%D0%BE%D1%81%D1%82%D1%8B%D0%B5+%D1%82%D0%B5%D0%BC%D1%8B+%D0%BF%D0%BE+%D0%BD%D0%B5%D0%BC%D0%B5%D1%86%D0%BA%D0%BE%D0%BC%D1%83+%D1%81+%D0%BF%D0%B5%D1%80%D0%B5%D0%B2%D0%BE%D0%B4%D0%BE%D0%BC&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771944_skachat__maynkraft__152_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4772/4772827_koduy__na__maynkraft_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4772/4772455_skachat__pesnyu__imany_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000553d3.bin
308ab695f3149fd793d7b88521b33598e8496f7aa556fc42735eb4b5075c5e3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x553D3 7956 bytes
font_01_sfnt_off00056a7e.bin
9f5e437b60bece2e3aadf72ee010f83b2cda22db0d1b7e5df911cdbb8275aa9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56A7E 14844 bytes

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