Malicious PDF — malware analysis report

Static analysis result for SHA-256 191607c6f0843cc0…

MALICIOUS

PDF

65.0 KB Created: 2020-12-22 17:23:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-22
MD5: 4bbc98baa99668ff8b4a0bfe372c6240 SHA-1: 52bf38d8d9f8b058209fa06f7bc6ea974c847636 SHA-256: 191607c6f0843cc0815d70efdd0bf62904ebbc06f98d23919fe13797252244bd
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://trafficel.ru/wb?keyword=russian%20truck%20driver%20simulator%20mod%20apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4392664/normal_5f8fa9aecdfa7.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/zalisujezajaje/accountant_cv_examples.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcec46b89e267495de7238a/t/5fd6d41a5488895576bd0898/1607914522536/biwuguvipavudafanazujerel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d61f47c3-4430-4dfc-a51f-8cbbaf05f66d/12451703729.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe157caab79ef463b71485d/t/5fe15bf2870087684b0ab2d6/1608604659430/nizevekak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ad66bf3-b8d3-481b-80e3-49fb3d8ad334/camron_10000_miles_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4daea8787e879898531d2/t/5fd1f738b0f0f842d7aa6fec/1607595832788/navemutigovanez.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcebc16ea509e4fb830a7d0/t/5fd162157c12252903e64cc5/1607557653971/horror_pop_sounds_cd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6adbc386-4aea-4c50-8039-380969a7dc23/48029870082.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef876d45-7de5-49ba-8c53-cfa850b4230e/dojibarigapilox.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/help_to_buy_london_reservation_form.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC230 5352 bytes
SHA-256: 5ae335a0f40dc68bfbf66d6f45f4b06d9917e2c71cb10c47f31bde9732440b29
font_01_sfnt_off0000d45a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD45A 10272 bytes
SHA-256: c3c601c494e05b56b9e03afab1f20f69cd4ac991c3df1c7a4e8199647ac9d67e