Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b58e8913fc91215…

MALICIOUS

PDF

366.1 KB Created: 2015-08-28 11:38:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: e12cffb5860568bf321c7b7626cee463 SHA-1: 838b28577ee7c98215994ab7067fd507edc944eb SHA-256: 8b58e8913fc912151d6301886031dce069eb27fc638e22c8e64e62393a948d53
92 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru. This indicates the document is designed to lure users to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

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%84%D0%B8%D0%BB%D1%8C%D0%BC+%D1%82%D0%B0%D0%B1%D0%BE%D1%80+%D1%83%D1%85%D0%BE%D0%B4%D0%B8%D1%82+%D0%B2+%D0%BD%D0%B5%D0%B1%D0%BE+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B1%D0%B5%D0%B7+%D1%80%D0%B5%D0%B3%D0%B8%D1%81%D1%82%D1%80%D0%B0%D1%86%D0%B8%D0%B8&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802454_fifa__07__ukrainskaya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802502_stalker__zov__pripyati_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802420_skachat__besplatno__igru_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056e91.bin
551bdd5f963ba6d1e02da8ac7cc31d9c17c50af0d204b8e53e82c2aa4976e049		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56E91 9388 bytes
font_01_sfnt_off0005898a.bin
8dea2d0a3ef1ac2fb3ea95c68fa90b1752d1853b4280a0432ef10a6e5cdd900f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5898A 15028 bytes

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