Malicious PDF — malware analysis report

Static analysis result for SHA-256 695ea40a8dfb9270…

MALICIOUS

PDF

44.2 KB Created: 2020-10-01 21:05:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2258bec0d89b320369ecef8f8c4cb822 SHA-1: 3ba17de4ff82be853d175007316c3f513fa478d9 SHA-256: 695ea40a8dfb927058897d2d0577829c2b588ab477750f5465fe28ed68ea0615
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ggtraff.ru/strik?keyword=fusionner+des+pages+avec+pdf+creator In PDF document text
    • http://files.mexicofoodpantry.com/uploads/1/3/0/8/130874205/rukipoj-rapixetobifu-zutedumunatixap-ridesi.pdfIn PDF document text
    • http://nofenipa.tourputtingcoach.com/uploads/1/3/1/4/131483337/93c98482078e4.pdfIn PDF document text
    • http://files.firstchoicefacilitation.ca/uploads/1/3/1/4/131437472/8252397.pdfIn PDF document text
    • http://files.foxnet.xyz/uploads/1/3/1/8/131871657/f5022bc895302.pdfIn PDF document text
    • http://ditewaleg.judycorbettbarker.com/uploads/1/3/1/4/131454262/9523355.pdfIn PDF document text
    • http://files.atousaraissyan.com/uploads/1/3/1/3/131383398/f9ca438037.pdfIn PDF document text
    • https://site-1036734.mozfiles.com/files/1036734/47846077164.pdfIn PDF document text
    • https://site-1036840.mozfiles.com/files/1036840/81092446389.pdfIn PDF document text
    • https://site-1036711.mozfiles.com/files/1036711/41539218867.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/fe916ecb-d3b4-47fc-b3c2-1030140ece83/57567881774.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ca573ae-df2b-4743-8f8b-5abe89fbe2b4/tulax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54a9281c-2828-48fe-8af4-a4e35eb54fe3/81942983941.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_off00006b7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7B 5304 bytes
SHA-256: 6c62655153c5f00f6ed9c5fd391c00dc6da53ede737a08777525d621b5b42a1d
font_01_sfnt_off00007da7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA7 11764 bytes
SHA-256: b8c1a3d789e8cce335d6b4fd3861ebff2cb2e1eb03c4d543e5e3ae13d13c3d03