Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4b1d9ccef2f6584…

MALICIOUS

PDF

186.3 KB Created: 2015-08-08 14:17:27 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6) First seen: 2021-09-24
MD5: eb930aa95b4b7be2efd44ab4c9b53541 SHA-1: 079f04f017447ffd45465c5dd2ba283c103e95de SHA-256: c4b1d9ccef2f6584f0c34a6c00ddc75488dd6009cd57c28584afead3f4f0d6cf
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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=%D0%BF%D1%80%D0%B8%D0%BA%D0%B0%D0%B7+%D0%BE%D0%B1+%D1%83%D1%82%D0%B2%D0%B5%D1%80%D0%B6%D0%B4%D0%B5%D0%BD%D0%B8%D0%B8+%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%82%D1%83%D1%80%D1%8B+%D0%BF%D1%80%D0%B5%D0%B4%D0%BF%D1%80%D0%B8%D1%8F%D1%82%D0%B8%D1%8F+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86&charset=utf-8 In PDF document text
    • http://fastpic.ru/In PDF document text
    • http://www.liveinternet.ru/clickIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4297/4297049_chitat_onlayn_m_garin_kak_prosnutsya_bogatuym.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4388/4388044_obnovit_windows_7_do_windows_8_besplatno.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4390/4390712_krasnaya_kniga_tatarstana_zhivotnuye_i_rasteniya.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_off0002457a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2457A 3556 bytes
SHA-256: 880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
font_01_sfnt_off000252fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x252FD 14312 bytes
SHA-256: 9c225651c538b6da993f97e3b28f04684fdd9657d36f476e5ac552864a88db16
font_02_sfnt_off00028028.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28028 14468 bytes
SHA-256: b79d56b22a3d37edc4793e81e28af2d51416733c1decb699be69ae0b1e9dff38
font_03_sfnt_off0002aad7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AAD7 7084 bytes
SHA-256: 994283a34d5c0983c45056d7509243711d5c364ccbe59eee80be14bbe3b55fe8
font_04_sfnt_off0002bf62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF62 6084 bytes
SHA-256: 819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
font_05_sfnt_off0002cef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEF7 3752 bytes
SHA-256: 9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e

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