Malicious PDF — malware analysis report

Static analysis result for SHA-256 235a6c3dae66e917…

MALICIOUS

PDF

45.0 KB Created: 2020-10-26 07:08:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 54430ed7f56e83bdf397d99e022e31b3 SHA-1: 84e5feb9479bcd0624f9691af79e2e51f2bfe232 SHA-256: 235a6c3dae66e917779003d126ec05b023ac7bc46225f91fd1bf9fd3f0effcce
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://cctraff.ru/123?keyword=python+tutorials+point+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387817/normal_5f8f20b555cde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388608/normal_5f91292ed7e90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387427/normal_5f8f9059aa136.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/zuvekazabuz-topofelo-gupolekodojavo-ponabiloxe.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/9eee2bec755e515.pdfIn PDF document text
    • https://sozivutapadonen.weebly.com/uploads/1/3/1/1/131164462/jusidekevugeru.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/c1b7697c8cd58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418365/normal_5f95ffb43c1c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387703/normal_5f9629cf3c1ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391893/normal_5f934f4a8c8dc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/5736/5159/files/22035878306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/8309/3910/files/befuxodavogutaxaboxuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8479/9383/files/send_books_to_kindle_from_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3071/5288/files/fejolixawepipabux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f173c08-25b7-4389-8247-053d21ea6f41/vomidibunu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49bb857c-b1f3-49a5-8b2e-d658c388f0c4/sesijodaroxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a6fdaee-d565-4d61-97b2-0dc483d11222/68515929755.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef972899-a2de-4910-9e84-6f33c53ead58/23154947407.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/behavioral_theories_of_management.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/case_study_analysis_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/xokiritimokabagosuleloluj.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/takazi.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/wojutatafowevuze.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_off0000711f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x711F 5232 bytes
SHA-256: 9c9e91994db19b1840a30d9fb779e81ffe5f96570cc16839280ab042b7e146f0
font_01_sfnt_off000082e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82E3 10548 bytes
SHA-256: 7c9358d8d27d4893b913d39b36b29c3e869602c39e1125bc15b052303269c089

Open this report in the interactive analyzer, or submit your own file for analysis.