Malicious PDF — malware analysis report

Static analysis result for SHA-256 eecad673c7705699…

MALICIOUS

PDF

362.3 KB Created: 2015-08-19 14:24:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 077961fc1afebb802cf732d065b96249 SHA-1: 4e65d7bfcd3a3d67908d16d94d49e93aee23343b SHA-256: eecad673c770569925a81488b9ca172277cfd3c196f21448d58dc880421f6d13
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is likely intended to deliver a payload. The document body, though heavily obfuscated, contains keywords related to downloading games, suggesting a lure to trick users into clicking the malicious link. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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+zoo+tycoon+3+%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://img0.liveinternet.ru/images/attach/c/6//4626/4626551_gotovuyy_dnevnik_praktiki_po_poliklinicheskoy_terapii_5_kurs.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626536_kogda_budut_izvestnuy_rezultatuy_gia_po_matematike_2015.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626851_skachat_kartu_moskvuy_i_moskovskoy_oblasti_dlya_android.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000560b3.bin
1b5a6f495f2412f982bbd6fc3100f66ed963b43bc33bbfeebc5ffde5a13f8b75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x560B3 10268 bytes
font_01_sfnt_off00057d4a.bin
2d49541d51d87b65e0a1dc495bcccb3aa2264987880501a83f883c53aeb7b217		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57D4A 14240 bytes

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