Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca1d851eb52842d8…

MALICIOUS

PDF

356.9 KB Created: 2015-08-29 01:33:49 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 0824a72d7727c1545d2e9a69dfc5c6b7 SHA-1: e027fd6b5944f5c74681aa907abe1e36c0858dff SHA-256: ca1d851eb52842d89e730ca4bb30590952a342cd4961d567907667d8e07bf941
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier and contains a critical heuristic indicating a malicious redirector link. The embedded URL, http://botcraftman.ru/, is identified as a known malicious redirector. The document body is heavily obfuscated and does not provide further context on the intended lure.

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%BC%D0%B5%D1%87%D0%B8+%D0%B8+%D1%81%D0%B0%D0%BD%D0%B4%D0%B0%D0%BB%D0%B8+2+%D0%B2%D0%B7%D0%BB%D0%BE%D0%BC%D0%B0%D0%BD%D0%BD%D0%B0%D1%8F&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817817_skachat__kartu__dlya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818250_rabochaya__programma__vospitatelya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818233_zvuki_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054db2.bin
6e5fa2f2827e7871133e4886e7973c0688a18bc62b8f776c195c16c0af89ad80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54DB2 10376 bytes
font_01_sfnt_off000569b1.bin
00061830b409a2ac76c1d237bcff0f71a34f888840e60bdbb7ab0e567c6024a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x569B1 13376 bytes

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