Malicious PDF — malware analysis report

Static analysis result for SHA-256 be5ccd0268d28276…

MALICIOUS

PDF

49.3 KB Created: 2020-10-15 09:56:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 54a2872500fbca331499635b9e0597fa SHA-1: 6251cff86da38a6c18df71cbfe87af4198c78aaa SHA-256: be5ccd0268d2827632231492f76d7f9d09512a1f8e8cd05583582c2312bcbabc
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/pify?keyword=iapp+cipp%252Fus+study+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365570/normal_5f87a71d6e239.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366337/normal_5f87bd36bd09c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367941/normal_5f877798ecb54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366036/normal_5f87a96f30d78.pdfIn PDF document text
    • https://site-1040881.mozfiles.com/files/1040881/giwafifolage.pdfIn PDF document text
    • https://site-1038467.mozfiles.com/files/1038467/52471463963.pdfIn PDF document text
    • https://site-1043967.mozfiles.com/files/1043967/59910706226.pdfIn PDF document text
    • https://site-1048557.mozfiles.com/files/1048557/juzor.pdfIn PDF document text
    • https://site-1040321.mozfiles.com/files/1040321/12979223790.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367622/normal_5f87608a58d50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366653/normal_5f876a7594e47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365540/normal_5f86f5071fbd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f8713cd5ba3d.pdfIn PDF document text
    • https://site-1041782.mozfiles.com/files/1041782/46220013406.pdfIn PDF document text
    • https://site-1039378.mozfiles.com/files/1039378/42643038172.pdfIn PDF document text
    • https://site-1042023.mozfiles.com/files/1042023/85928081874.pdfIn PDF document text
    • https://site-1041682.mozfiles.com/files/1041682/math_u_see_zeta_worksheets.pdfIn PDF document text
    • https://site-1043446.mozfiles.com/files/1043446/81776440101.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/1/0436/8901/7497/files/64859973453.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1136/6309/files/dorsey_asset_management_returns.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0489/3016/0824/files/xafelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9484/4587/files/74940010666.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25d30858-a7c2-452f-9cb2-7475b90c585c/58530247369.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cbfae5c-3740-4258-badd-88975817cbe3/13413574653.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96c6838c-8618-448f-a40d-ee091f38c8ec/20085007083.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_off000081aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81AA 5188 bytes
SHA-256: 1bb7163f11b42a541358f79c4db330cb504ded824379dde0329bf81365c1e4b3
font_01_sfnt_off0000936a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x936A 10668 bytes
SHA-256: f66195ddfd96c42113945c93813b92deb944091d84de67d7cc9138c81c622662

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