Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cb952cfef942939…

MALICIOUS

PDF

379.4 KB Created: 2015-08-21 09:19:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 43b2136dd85807cc2bb27ab2711a6f38 SHA-1: cf1d59dc84d1ed19642f843efbcc47b52f6433a7 SHA-256: 6cb952cfef9429391b1b1c59c975088f26be3e21697bf6f3ce88cc2d390a641a
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by a machine learning classifier and contains a link to a known malicious redirector. The embedded URL suggests a lure to download content, likely malicious. While no scripts were explicitly extracted, the nature of the embedded URL and the ML classification strongly indicate a malicious intent to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%81%D0%B5%D1%80%D0%B8%D0%B0%D0%BB+%D0%BE%D1%82%D1%80%D1%8F%D0%B4+2+%D1%81%D0%B5%D0%B7%D0%BE%D0%BD+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654759_shellexecuteex_sboy_kod_1155.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654737_instrukciya_po_ohrane_truda_yurista.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654689_skachat_igru_metro_2034_cherez_torrent_besplatno_na_russkom.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005a366.bin
78e49ce527316ceeb114508baf607ec34abffdc67dc5808a47e7ea4db7232352		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A366 8068 bytes
font_01_sfnt_off0005bb34.bin
5d49f43319f3011987eedc1d296f0c495f3e0a0764685b238e759a19c01edb59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB34 16340 bytes

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