Malicious PDF — malware analysis report

Static analysis result for SHA-256 23e60ab03b717941…

MALICIOUS

PDF

35.8 KB Created: 2020-10-16 20:03:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c2e6bb0c6189530799ebe1b47a8d2aee SHA-1: e8036d17d140e50fee5e8eb781ddb6f3b21e1a78 SHA-256: 23e60ab03b71794148743bf312a649e5f9388db2e01b76b7e6144fbda8edecb1
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://gettraff.ru/123?keyword=greek+mythology+in+byzantine+art+pdf In PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/tiladejonu.pdfIn PDF document text
    • https://misopiwulasi.weebly.com/uploads/1/3/1/8/131856666/5764964.pdfIn PDF document text
    • https://varipejat.weebly.com/uploads/1/3/0/7/130739080/pevoxiravuwe.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/21a22b9.pdfIn PDF document text
    • https://nipaxibovaj.weebly.com/uploads/1/3/1/3/131379211/nekofamomolileg-jepewitetop-vukiwuko-zamugolobimag.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/2a5b38eef3430.pdfIn PDF document text
    • https://legadiduzavof.weebly.com/uploads/1/3/2/6/132681829/xanubalunagu_pajixile_datekuxe_vamujomerino.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/caa64.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/3905791.pdfIn PDF document text
    • https://mujunoba.weebly.com/uploads/1/3/2/6/132682006/69071b545.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_5f8732db3bd21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368969/normal_5f889f8c2afa5.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/e170a7c1-e86d-48bd-b344-da4336d6eae0/21458021351.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e6cff64-0322-4c11-b499-5b9af103f5c2/53537657607.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66b25ecf-ef6c-48b6-989f-66e63eddaa9c/wuvakexubezofunelasivebag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/4456/8989/files/9875307000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/0747/1527/files/palm_treo_650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5625/1555/files/pickens_technical_college_phone_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/5465/1294/files/dangal_movie_story_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1522/8570/files/bagutipozokal.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_off00004e69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E69 5664 bytes
SHA-256: 6912c75449bae6ae40ccc59a5fc3b0ce94f89222f26f2d2cc0a6534c385d1dfb
font_01_sfnt_off000061a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A2 9400 bytes
SHA-256: 931054e5a8b5d192680d519866b4f13e80935e9b54081b1b6a8fce74c647707b

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