Malicious PDF — malware analysis report

Static analysis result for SHA-256 83ad64c5b48ba13f…

MALICIOUS

PDF

37.9 KB Created: 2020-10-27 03:11:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 2ca68edbb7998d562e9e13b644dfe77f SHA-1: 36d64b74de6285400d6c7296e3e41bf9cc6022c7 SHA-256: 83ad64c5b48ba13f2b22e46b0a73deb3404f30f02a37a0550dd07ecd58c91956
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://ttraff.me/123?keyword=st+francis+de+sales+church+albany+ny In PDF document text
    • https://naroxelilokatud.weebly.com/uploads/1/3/1/3/131384214/243799.pdfIn PDF document text
    • https://vavavutexe.weebly.com/uploads/1/3/4/4/134441002/numulajemen_fotonule_nimibarede_nurejeroloru.pdfIn PDF document text
    • https://gatilavim.weebly.com/uploads/1/3/4/3/134391542/06f880.pdfIn PDF document text
    • https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/afbd779ea0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370278/normal_5f8bbd2f35942.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f959c7b8a919.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376850/normal_5f93baa31a153.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370777/normal_5f8e5f5c1d949.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370529/normal_5f88a3d03fd91.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/4d5351fbb209c0.pdfIn PDF document text
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/kemofopomekewuniw.pdfIn PDF document text
    • https://rikisuluwujufa.weebly.com/uploads/1/3/1/4/131452938/df6b3c03550a04.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/runemevurexuziwone.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/viruxumabepedi_sulifupunapesor_gegimutajatevar_gamuwewobavowaw.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/pokobu-pidoror-pekirez.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/85ec1be3-b117-4968-80b5-8606f863f883/68682648296.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25dba481-d0c4-4155-ae4f-c92038900084/pepunidetuvoxuveginut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/082a908c-f94c-4e1b-96dc-12302de9d2fb/waxejerakemuratasug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae1d496e-e072-442e-a09d-282f53f4da8a/wutolarisoko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d84796c7-ebdb-4566-83bc-1782d892aaf5/62900854040.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/technical_analysis_for_dummies_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/bulking_workout.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/research_aptitude_questions_with_answers_download.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_off00005504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5504 5456 bytes
SHA-256: c4eae86376e6e8e623954b7ecdc969de1728ffa5d18175124fe6cca6f74412fc
font_01_sfnt_off00006776.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6776 10132 bytes
SHA-256: 2bdcb8cb504c0b55eff41ad4a72f2163d6721c47ec311910578fd7e802da1548

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