Malicious PDF — malware analysis report

Static analysis result for SHA-256 7395e66c00b6b283…

MALICIOUS

PDF

388.8 KB Created: 2015-08-21 09:26:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 65c2f22fd3e18d7d548759503c6afbac SHA-1: 6a9f9511a34072cec6323e89039bcc77f5ac6b73 SHA-256: 7395e66c00b6b283199e66459e0296be804002d15b3f7331e687ee5d085309f0
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of a malicious URL strongly suggests a phishing or redirection attack.

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=%D0%BC%D0%B5%D1%84%D0%BE%D0%B4%D0%B8%D0%B9+%D0%B1%D1%83%D1%81%D0%BB%D0%B0%D0%B5%D0%B2+%D1%82%D0%B0%D0%BD%D0%B5%D1%86+%D0%BC%D0%B5%D1%87%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654815_rannie_sroki_beremennosti_radzinskiy_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654770_skachat_banner_vuymogatel.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654788_skachat_vzlomannuyu_igru_boy_s_tenyu_2.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005cd05.bin
5e49deeb8957afb044866e746d0204cc819155075a4237ba45c7b34149c624c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD05 8632 bytes
font_01_sfnt_off0005e5d8.bin
c26f18d224073565568c14dc61ba9cbbe7bdd2965f5a8301ccf560ca1c1b042b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5D8 14548 bytes

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