Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ccda1dfa2ea2bb4…

MALICIOUS

PDF

183.2 KB Created: 2015-07-23 20:51:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6) First seen: 2018-02-07
MD5: b2e89d996233d65fd5ea4b54dcc49e7d SHA-1: ec42cd06150f7e74e983979f50d476cb7cee7d3e SHA-256: 3ccda1dfa2ea2bb455702f8d65af5a36089811ad79a02c72b66a7000836d1b47
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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%B8+%D1%88%D0%B0%D1%80%D0%BF+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8 In PDF document text
    • http://fastpic.ru/In PDF document text
    • http://www.liveinternet.ru/clickIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184455_stivenson_vereskovuyy_med_skachat_fb2.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184464_asus_n750jv_drayvera_windows_7.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183180_lebedi_shema_vuyshivki_krestom.pdfIn PDF document text
    • http://www.microsoft.com/typography/fonts/In PDF document text
    • http://www.microsoft.com/typography/fonts/YouIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023b63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23B63 3556 bytes
SHA-256: 880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
font_01_sfnt_off000248e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x248E6 14776 bytes
SHA-256: 0510608532b3cda233947f20645ddf77e680c25a004a646767edce5890b56e6d
font_02_sfnt_off00027756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27756 14520 bytes
SHA-256: c521cb7f32363069232cb6cf023e13d81dfc7f2346484feaa89f0b3c8cd570ff
font_03_sfnt_off0002a228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A228 6044 bytes
SHA-256: 5f32d0aea34a3dfbfb41a2a5c3ae209b1dd19d4733bbd2450e14e886c5393920
font_04_sfnt_off0002b2ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B2FF 6084 bytes
SHA-256: 819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
font_05_sfnt_off0002c294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C294 3752 bytes
SHA-256: 9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e

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