Malicious PDF — malware analysis report

Static analysis result for SHA-256 6aa266ee8ca72cd8…

MALICIOUS

PDF

47.1 KB Created: 2020-10-19 08:47:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7e9ed9d11224d25bfab99657e77cd8b2 SHA-1: fc6ebe4af55626de40541c41085b76ca76580185 SHA-256: 6aa266ee8ca72cd8b145459f694023953cce3a974f05f412434ddb53abeb1649
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/strik?keyword=kathryn+kuhlman+pdf In PDF document text
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/javimokudafaxe.pdfIn PDF document text
    • https://sanuvexugivi.weebly.com/uploads/1/3/1/6/131606490/ba365da.pdfIn PDF document text
    • https://finiluxexolije.weebly.com/uploads/1/3/1/8/131856594/6001731.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380068/normal_5f8b9e8f4f082.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_5f86f96134dae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368250/normal_5f8cf34f15032.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367302/normal_5f8852bfba5dd.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/28332.pdfIn PDF document text
    • https://dujopoda.weebly.com/uploads/1/3/0/7/130739119/gomiriw_niredulobup_zulagatu_denazejokumuxor.pdfIn PDF document text
    • https://tabogivazosepa.weebly.com/uploads/1/3/1/8/131871767/5671579.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/c6931cab-6e14-4966-b5da-d5a276484109/34706876085.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d711508-c677-4edb-be81-7f7d6aaa4a8c/5362100465.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4d78ac4-1dc2-4cdf-9a08-1a9f0460c4a7/rukemuzoxip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e5d900d-14b6-47f9-aa32-1d88ee82f394/fake_book_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c62b4a5-05d3-44b3-b84e-219d457c8e1f/88710799011.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9b47d15-113f-4029-8d74-3bd95c313563/binipipef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c4fdef2-ea0b-44e0-8ed1-883cd1f5f3dc/47372691118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3778/6780/files/deuter_guide_35_rain_cover.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/8462/0217/files/disney_collectibles_price_guide_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8758/0315/files/mamewovuvokax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5654/3944/files/health_care_system_in_singapore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9779/2420/files/alchemist_code_unit_tier_list_2020.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_off0000798c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x798C 5240 bytes
SHA-256: 28be36ed89e8315aa0b4204bd2e3b9147ea1254c763f56114728f175e3d0ef0d
font_01_sfnt_off00008b3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3B 10572 bytes
SHA-256: 40c4466a5d0485baa4d9ffaa3c9901f0a41f805082b7314d34f1e9d58249e84d

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