Malicious PDF — malware analysis report

Static analysis result for SHA-256 7074e8f0f39fd0b3…

MALICIOUS

PDF

368.7 KB Created: 2015-08-22 08:59:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 5820e83fbfd53680175272213d2cce95 SHA-1: 98fad301be6936d85cb1b4b7979015a19bfb4674 SHA-256: 7074e8f0f39fd0b3dfa20c36382b120edc7317ac27b31ced15548047a9397705
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a link to a known malicious redirector, botcraftman.ru, which is likely intended to lead the user to a malicious site. The ML classifier also flagged this PDF with high confidence. The document body is heavily obfuscated, but the presence of a malicious URL is a strong indicator of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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=partition+table+doctor+35+rus+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%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//4674/4674519_mazin_vozhd_vikingov_skachat_fb2.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674548_skachat_igru_18_stalnuyh_koles_kubanskoe_razdole_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674508_igra_blickrig_3_skachat_torrent_besplatno.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000577a1.bin
a0821be866006fd65f51973fb5164fc416832e66b300f3d16d7e3d1a39516a3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x577A1 9744 bytes
font_01_sfnt_off00059227.bin
5aa93d0a06b71e8c4198adfedc50b8647e922305fa8d94854fb6e7426b52ae98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59227 16312 bytes

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