Malicious PDF — malware analysis report

Static analysis result for SHA-256 1073450ae43a2c9e…

MALICIOUS

PDF

42.7 KB Created: 2020-10-02 17:28:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3ca45c83c892247b3e0e0cc2e7f30695 SHA-1: 7ec060794a5d9c5cc379b56e8186f13aabdabb67 SHA-256: 1073450ae43a2c9e8316b6925ec417d7730c8a19eed35bdb539852f2ef21e301
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gettraff.ru/strik?keyword=bullet+journal+printables+free+pdf In PDF document text
    • http://files.paintingsbychrislwilliams.com/uploads/1/3/0/7/130776423/7384890.pdfIn PDF document text
    • http://files.deanbeersnra.com/uploads/1/3/0/7/130738721/3aced58d757.pdfIn PDF document text
    • http://tiwizivu.townofharmony.org/uploads/1/3/1/6/131637814/8731711.pdfIn PDF document text
    • http://zexugir.sramics.net/uploads/1/3/1/4/131408172/sulunewevimovofazor.pdfIn PDF document text
    • http://dejapojo.astoriaoms.com/uploads/1/3/1/4/131483065/janifabatawete_bozumatof.pdfIn PDF document text
    • https://site-1036823.mozfiles.com/files/1036823/tedisukanemona.pdfIn PDF document text
    • https://site-1036751.mozfiles.com/files/1036751/43388467177.pdfIn PDF document text
    • https://site-1036692.mozfiles.com/files/1036692/57499535761.pdfIn PDF document text
    • https://site-1036868.mozfiles.com/files/1036868/dipexexenugubawefaxemaz.pdfIn PDF document text
    • https://site-1038949.mozfiles.com/files/1038949/73644839403.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e628584-e7a7-446f-baae-65162cf8d6fb/20862062143.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e65c417c-bf9f-4340-83f7-115c642cf9db/watusuvoxisuvuwuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44b6b7a1-c1e3-4871-a2e7-67eaa35fd300/18683920474.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/328d3e66-b203-4295-8c36-66b8bfd2b86e/rovaxuw.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_off000068a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68A0 5300 bytes
SHA-256: 40a4a9d75ec901718d3bf4cc92825d1e39e0d2a22e1fd90ce7964233fdcc407a
font_01_sfnt_off00007aaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAF 10388 bytes
SHA-256: 506d7eaa0909e591f31c3202e0f178b7a67caeccfef9d3b2f7a657ffcc11ed85

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