Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0ca6ce8fc10cfad…

MALICIOUS

PDF

46.7 KB Created: 2020-10-25 10:17:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 835063ff0391d3db008b95d7530b44c4 SHA-1: 0e8dd160e7a54b921e47808834b601d0c84ead8a SHA-256: e0ca6ce8fc10cfad7315f3279a90f976b485a82db6e96020bd2c61b259d81320
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/pify?keyword=google+photos+duplicates+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4377098/normal_5f95129ebfec7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379731/normal_5f90e08fb266d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387036/normal_5f8dc36a39ee5.pdfIn PDF document text
    • https://rajaxamakato.weebly.com/uploads/1/3/2/3/132302926/43ec7e21c5.pdfIn PDF document text
    • https://bewupoterefi.weebly.com/uploads/1/3/1/3/131380107/3181650.pdfIn PDF document text
    • https://tedumuwoke.weebly.com/uploads/1/3/1/3/131397970/1803763.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/9f6388fc-fcb9-4949-a362-2caca087ed4a/23667986776.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36e08f1c-d122-42bb-83fd-f3a33cd2217a/tiwovoweru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0877798e-20c6-47e6-9efd-2de55030badc/sokepowujobofagupika.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91faa791-bf56-4628-b046-cbc06546f317/buwopu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61ec302b-0bb4-4eb8-9f75-80faabd6f7e7/83802827924.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b55edd1c-5a0c-427a-87f9-b4b312d2ba13/kasusumimegifadafek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7163360-dc0a-43d1-affa-3ac411264d2c/lebivipubuzifo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b751fa94-f81b-4d65-a86e-b95e73ab931f/72845264242.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97c76b5b-5e66-4d6a-b876-ac4f3c95b999/kuraketabu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c034c3a-0141-4891-802b-82f6b4abd626/zasunol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68e80390-6859-49e0-b8e8-654c349074a4/betemurupagumunizafirow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69be7ed7-7051-456b-bce5-2325f004ad6b/94381912651.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/wewuzilu.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/antrenmanlarla_matematik_2_zmleri_indir.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_off00007612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7612 5364 bytes
SHA-256: f2734019eb1a61c2e72f84de8f8feefab035c053252b953f6e2df653104c11a8
font_01_sfnt_off00008850.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8850 11380 bytes
SHA-256: 4971c8d4efd5cc28ecf5d6b29f595acbc4e9ad3cd371408b555045f93348cc45

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