Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b17d572d9d8fe94…

MALICIOUS

PDF

43.8 KB Created: 2020-10-16 00:56:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 683048ab89a1a05b6429e437742e21b7 SHA-1: fde62a3b5a1655ffded1017f18da32576b4c58ae SHA-256: 1b17d572d9d8fe9415aca5d41b85e01b211d2bad3e64d259d70bd1ec7780504e
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=screening+for+fetal+aneuploidy+pdf In PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/boxatemet.pdfIn PDF document text
    • https://zeginuvo.weebly.com/uploads/1/3/0/7/130775519/6887731.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/winepogor.pdfIn PDF document text
    • https://kokubexajaluk.weebly.com/uploads/1/3/2/6/132681668/c726aa48700e.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/9d013.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371553/normal_5f887487110c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365998/normal_5f871123ce082.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_5f872c7348b08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_5f88c2d9ed501.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365582/normal_5f870aeed0c13.pdfIn PDF document text
    • https://vunixumo.weebly.com/uploads/1/3/1/4/131453253/zamovumez.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/jixebezenefelod.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/dozusepap.pdfIn PDF document text
    • https://taxajadotediru.weebly.com/uploads/1/3/0/8/130873824/9599477.pdfIn PDF document text
    • https://jaserasozupog.weebly.com/uploads/1/3/1/4/131454215/mosajesu_wegeger_wizifelem.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/82762.pdfIn PDF document text
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/c13a2c1.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/zutilipevozafeguwu.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/6dd4ecfc-d8ec-4336-af88-c69f8fa4f93d/32749458158.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a643b993-41a4-4fe7-822e-1e8e31739208/kaduwunevisefera.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e5e1bf0-e0a6-4795-9f78-4fe64fb90ec0/38653905847.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82bda89d-8962-4e6c-bf30-99f4b6a55751/jezakuvunefidutalu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a3c2f89-3fda-48d9-809d-8821ace8fa91/palujifusebasefut.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_off00006c07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C07 5348 bytes
SHA-256: 1552d50f078eabadb41e3441da980e5113f66e6d841b406a81639c76bdd56cc0
font_01_sfnt_off00007e42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E42 10484 bytes
SHA-256: 183cc993a07334e82acefc552cbf2c2dfc39bcf7e90bcb7fa6986bab125c81ad

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