Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9481e301b2bf22d…

MALICIOUS

PDF

142.4 KB Created: 2015-08-19 21:06:22 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-11-02
MD5: 2a2f3619a05b89d15663c62766360bf3 SHA-1: e5fb58d951227ee1252cea6cbba1ad98a4ef6157 SHA-256: e9481e301b2bf22d882cf3a0e8a79f4631dd850fb5572ff8bca9af9072936508
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a malicious redirector link pointing to 'http://botcraftman.ru/'. While no scripts were extracted, the presence of this malicious URL strongly suggests an attempt to lure the user to a compromised site, likely for further exploitation or credential harvesting. The PDF's authoring application, wkhtmltopdf, is not inherently malicious but can be used to generate malicious documents.

Machine Learning

  • Nyx PDF Classifier clean score 0.1790

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=10%D0%BD%D0%BE%D1%8F&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4627/4627858_master_shef_4_sezon_skachat_cherez_torrent.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4630/4630402_chituy_na_gta_san_andreas_na_russkie_mashinuy_bez_skachivaniya.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626999_skachat_besplatno_pc_suite_dlya_explay.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001ee91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EE91 7784 bytes
SHA-256: f5313441a0575eeeb9abfa8d716acb1b9dc6c1c0f8ccb3d206d7071078f5a2cb
font_01_sfnt_off00020501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20501 18096 bytes
SHA-256: 1c135a68f46fda49286198ae500bc337e339439f217364b896be9253b6ec9b2f

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