Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bb71b06a15b6d00…

MALICIOUS

PDF

371.6 KB Created: 2015-08-19 14:03:54 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 7eedd67149b82ed2f75e241b713332eb SHA-1: 6287ec379397ad210bd8b465ae5c6e1a7537b07a SHA-256: 0bb71b06a15b6d00c4f8ca6770b3dab0b24ab5af2596717cac60e22455c56cd1
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically directing to 'http://botcraftman.ru/'. The document body, though heavily obfuscated, contains text related to 'windows 7 home basic' and 'torrent', suggesting a lure for software downloads. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

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+windows+7+home+basic+oa+cis+and+ge+x64+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626471_korchevskiy_yuriy_feldeger_3_suyn_boyarskiy_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626461_deti_nudistuy_podrostki_foto.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626454_mech_2_sezon_skachat_torrent_vse_serii.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000581db.bin
256c933f103208dbadfe4ac8b554c7c784ca43c23c19abb6cbf4a997515d2c97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x581DB 9784 bytes
font_01_sfnt_off00059cfc.bin
fc08663342640e74ed793c89168b90fd83141a0251b134bed3dba43c7f4261d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59CFC 16300 bytes

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