Malicious PDF — malware analysis report

Static analysis result for SHA-256 8473b360ce62ea96…

MALICIOUS

PDF

383.9 KB Created: 2015-08-22 08:53:38 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 306d35758e01410d647938f4a23b01bb SHA-1: 8412cb03378a16a4c8c5a9e11fcfcdc42861f191 SHA-256: 8473b360ce62ea963d9f6cc8897deb66c894c1d32024feef65397eab6fe19898
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 strongly flagged this PDF as malicious. While no scripts were directly extracted, the presence of a malicious URL is a high-confidence indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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%BC%D0%B0%D0%B7%D0%B8%D0%BD+%D0%B2%D0%BE%D0%B6%D0%B4%D1%8C+%D0%B2%D0%B8%D0%BA%D0%B8%D0%BD%D0%B3%D0%BE%D0%B2+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+fb2&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674491_skachat_kw_dlya_kasperskogo.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674501_skachat_anti_moskito.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674487_bonus_kod_world_of_tanks_2015_na_noyabr.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b58d.bin
fabb301c76654365e87eddacdd870b74047192d6d22d019652da0767dc28cbdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B58D 9640 bytes
font_01_sfnt_off0005d082.bin
81148620b8f11fca516fec5e352281225e4519babfe20d1ca77c5b0e8edc40d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D082 15256 bytes

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