Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ff99de40fdb47d7…

MALICIOUS

PDF

347.5 KB Created: 2015-08-28 00:04:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 05951e4c594d6bdf2b96755cd6c0e07f SHA-1: 747d27d4ca513b13b5179460f41ce9ccbc1eb6b9 SHA-256: 4ff99de40fdb47d74660fd83f218cef52258860bd9086114f1b7cbe46e721808
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted from this sample.

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=%D1%81%D0%BE%D0%B7%D0%B4%D0%B0%D1%82%D1%8C+%D0%B0%D0%BA%D0%BA%D0%B0%D1%83%D0%BD%D1%82+%D0%B3%D1%83%D0%B3%D0%BB+%D0%BF%D0%BB%D0%B5%D0%B9+%D0%B4%D0%BB%D1%8F+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788370_kitayskiy__appstore_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788231_programma__stareniya__lica_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787987_shema_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005240b.bin
e5b79bf226cf36ef7f0e253dc4d83b725edcf159934c8a2f63fa8c152fe86093		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5240B 10076 bytes
font_01_sfnt_off00054097.bin
f9de51330ab95441cbdeb8492086aaeb85a4342d5b22fe02f7f009f03e74eae6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54097 15080 bytes

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