Malicious PDF — malware analysis report

Static analysis result for SHA-256 0115b10d06aaf555…

MALICIOUS

PDF

353.8 KB Created: 2015-08-23 15:52:47 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ddb82ecb20bb115441e89912d7826008 SHA-1: 45b34213a4c78e52e6ad7fe94a2fafa5fbf89fe9 SHA-256: 0115b10d06aaf555f5797ee64be3177c634d9e75843bc83359de04b2f9e9ad11
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. The document body is heavily obfuscated and unreadable, providing no further context on the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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+%D0%B8%D0%B3%D1%80%D1%83+%D0%BF%D0%BE%D0%BB%D0%B5+%D1%87%D1%83%D0%B4%D0%B5%D1%81+%D0%B1%D0%B5%D0%B7+%D0%BE%D0%B3%D1%80%D0%B0%D0%BD%D0%B8%D1%87%D0%B5%D0%BD%D0%B8%D1%8F+%D0%B2%D1%80%D0%B5%D0%BC%D0%B5%D0%BD%D0%B8+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4685/4685822_pdd__vozhdenie__po_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4685/4685593_skachat__maynkraft__152_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4684/4684500_otchet_pedagoga_psihologa_o_prodelannoy_rabote_za_god.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054245.bin
cb771bdb24f144b241ba7822a468416db4326f2cf617f03500e9f51def2f1a3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54245 8352 bytes
font_01_sfnt_off00055aa6.bin
a114e8df8ccf2b23c7a5480682a2c12970f9be06ccd5ea15638c266c50a67e7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55AA6 13924 bytes

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