Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a8a6a8c3a47173a…

MALICIOUS

PDF

34.7 KB Created: 2020-11-06 09:43:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 69be72de06e0c2b9b282224f68041b68 SHA-1: 72fee1dea3e9a88b341346612a8919e9cf17356e SHA-256: 5a8a6a8c3a47173a9c5aebe5e78f0bd9a63aa0ae84fe85fc77db5dc85b5aa0db
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link disguised with game-related keywords, which is flagged as a malicious redirector. The ML classifier also strongly indicates maliciousness. The embedded URL likely leads to a phishing page or a download of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 3

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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 https://traffine.ru/aws?keyword=anime+fighting+simulator+map+roblox In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376105/normal_5f90cbeb28004.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369648/normal_5f985c24b8206.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388608/normal_5f8f8bb896a49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367912/normal_5f99e2f7e3bd9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/3240790416.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/john_adams_middle_school_albuquerque.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b51253c-1e4f-463a-a39f-ea277a77c6f6/formulario_de_matematicas.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/kibeboj.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/7603671553.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/32299744172.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/accounting_concepts_and_conventions_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02869ada-27fa-4b1a-adaa-65462512cd51/56167127778.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/bileza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00e34c19-114c-46b8-b42a-45f4a888f22e/82228729973.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18233530-04ff-44e5-af86-8f09fb46842d/jesapazupidajofum.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6495 5512 bytes
SHA-256: 9482af743056f3555ce57f5e993357d4fc7c08c48cd58731b421edb62c38c3b5