Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0b1bdc6ebeebdc2…

MALICIOUS

PDF

42.1 KB Created: 2020-10-28 03:42:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 915a3cfa0b9823919f94c909ebd60d95 SHA-1: f2a695a7fb5539ac9edfad0f725290c50909571d SHA-256: c0b1bdc6ebeebdc2044e6a6de791424f2911ff3ba4dba2858f1c2dffe8803259
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=jurassic+world+evolution+population+guide In PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/7b9c45c794f.pdfIn PDF document text
    • https://wopuremob.weebly.com/uploads/1/3/2/6/132696580/tuzosawimijil.pdfIn PDF document text
    • https://fanawilixu.weebly.com/uploads/1/3/1/4/131408209/297455.pdfIn PDF document text
    • https://gogozugibijom.weebly.com/uploads/1/3/4/3/134369614/7feeaae1.pdfIn PDF document text
    • https://tosisevutozu.weebly.com/uploads/1/3/4/3/134328017/lijit_mezivaxobaso_tukosumume_zizim.pdfIn PDF document text
    • https://voganolov.weebly.com/uploads/1/3/4/3/134372868/lamubopibefegonami.pdfIn PDF document text
    • https://zoxetojasag.weebly.com/uploads/1/3/1/4/131437223/8301099.pdfIn PDF document text
    • https://gonerogad.weebly.com/uploads/1/3/1/4/131438616/ae9971eae.pdfIn PDF document text
    • https://pixabetamomu.weebly.com/uploads/1/3/1/0/131070001/f5fd86d712.pdfIn PDF document text
    • https://solujokorox.weebly.com/uploads/1/3/4/1/134108712/4736873.pdfIn PDF document text
    • https://pipomojum.weebly.com/uploads/1/3/4/4/134437532/laxox.pdfIn PDF document text
    • https://xipunozelizu.weebly.com/uploads/1/3/1/3/131382486/teripex.pdfIn PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/torajisol-miravetewiluput-wovugejeg-fedawu.pdfIn PDF document text
    • https://dunujamovexen.weebly.com/uploads/1/3/4/3/134361976/e22bc.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/7885719.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/f74d508e-68f5-4740-bc1e-6c033154a684/jadoxeteregonakaka.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_off0000662b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x662B 5384 bytes
SHA-256: 36854e81c6532babf0c8e600559d3d91bdc0eeb2069e591dacb1ddc8180cd9e8
font_01_sfnt_off0000789a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x789A 10096 bytes
SHA-256: 2cd644224d24303234b240a1aeed24565d0d9f3da98784423e68e630991655a6

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