Malicious PDF — malware analysis report

Static analysis result for SHA-256 b03300048c510e68…

MALICIOUS

PDF

62.7 KB Created: 2020-10-16 12:49:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f177063696ae6f4e55c31bd2153b584e SHA-1: e79e91e099aee0a2c6fbbf61895b6e36196d59ab SHA-256: b03300048c510e68814472494d014388b510971952931d9f93f0e71f25d79489
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/123?keyword=gynaecology+case+sheet+format+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367313/normal_5f893b769b7fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369310/normal_5f8887e47cd02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367310/normal_5f874c9992302.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370051/normal_5f882fc267d80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_5f87029d81f10.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/8999412.pdfIn PDF document text
    • https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/xefiwubinewegileb.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/5401885.pdfIn PDF document text
    • https://tunimesepet.weebly.com/uploads/1/3/1/4/131455680/jumibopegixifazoga.pdfIn PDF document text
    • https://xuwuperozaposa.weebly.com/uploads/1/3/2/3/132303395/dasepan-releguko.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ratot_muweliwamopoj.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/1/0266/8045/9438/files/111_area_code_state.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/subaru_power_washer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7527/2855/files/31755982079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0171/4587/files/vukatalunidadosuralin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6976/7321/files/funny_magic_tricks_cards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9569/5265/files/22709473989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8791/3653/files/ip_cam_viewer_lite_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b04460ab-408e-4bc5-aa30-8be4014857ec/zajasekaxolakanide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ec25abf-4005-4c39-8302-45081320bb10/74748786965.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84ed36a2-bd7b-4bab-9c05-ccf052c561ad/nalopojesusolizupofituxol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f2c0fec-59b7-49ea-a1f0-e9182f4133f7/vapavodumadalavusosena.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_off0000b585.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB585 5704 bytes
SHA-256: 1304cdb6565fda8514839ba47ee7f4946012ccd91c36887eed2f34492feb36e5
font_01_sfnt_off0000c8c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8C9 10132 bytes
SHA-256: c87edec3f8f6cd9f6ee2b2f40dd9744c44162ad70d0eeb7dafc86660cb40960c

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