Malicious PDF — malware analysis report

Static analysis result for SHA-256 783010153eafef0f…

MALICIOUS

PDF

356.4 KB Created: 2015-08-20 09:08:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 3f57351fcb4b115f80c98fc350e380af SHA-1: 3880694aa4d259fbe8771480f8e9b430e7497daa SHA-256: 783010153eafef0fab8108f4b04ec6a936dd0c8460acd1615c7b80f9b118075b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. 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 a malicious intent to redirect the user.

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%82%D0%BE%D0%BA%D0%BE%D0%BB+%D1%80%D0%B0%D0%B7%D0%BD%D0%BE%D0%B3%D0%BB%D0%B0%D1%81%D0%B8%D0%B9+%D0%BA+%D0%B4%D0%BE%D0%B3%D0%BE%D0%B2%D0%BE%D1%80%D1%83+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86+%D1%83%D0%BA%D1%80%D0%B0%D0%B8%D0%BD%D0%B0&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639291_skachat_oboi_na_rabochiy_stol_vo_ves_yekran.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4638/4638898_skachat_maynkraft_152_s_modami_cherez_zona.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639488_shema_na_chasuy_yelektronika_6_11.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054a1d.bin
89c2ed5142f4791cf0739186b9e1228b1d7c0bb6ffe8eb390dac0b465ba9ec2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54A1D 8252 bytes
font_01_sfnt_off00056231.bin
ef2a66cc28c819b692a4657020f024c53111d8636c5aedf9754a6a8989f3f9ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56231 15472 bytes

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