Malicious PDF — malware analysis report

Static analysis result for SHA-256 e79a23f1196a49cd…

MALICIOUS

PDF

47.1 KB Created: 2020-11-06 01:17:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 44c3643339a907d9deb8edc41dd03233 SHA-1: d8983a931229e0f07b7ab023e9bcf0995ba70f72 SHA-256: e79a23f1196a49cd6d8f5dfa35aa5284989fbd8a273e5cf3e601b977cba1d55e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?keyword=primary+games+unblocked+monkey PDF link annotation
    • https://vemowidododujev.weebly.com/uploads/1/3/4/3/134353566/6547037.pdfIn PDF document text
    • https://gijepunudadolow.weebly.com/uploads/1/3/4/4/134497403/8548e89e400a.pdfIn PDF document text
    • https://mogidudurunupiz.weebly.com/uploads/1/3/2/6/132695636/ce43470f1.pdfIn PDF document text
    • https://xoselupovogim.weebly.com/uploads/1/3/4/6/134610719/netokejajomigir.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/jinitorip-bolag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410027/normal_5f9b315054df5.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/vudodapazepipux_kijemomebegax_velagokotukif.pdfIn PDF document text
    • https://lewejasolon.weebly.com/uploads/1/3/1/4/131437246/niwetagusur-tiwodifuk-vuvuwo-videkoxuk.pdfIn PDF document text
    • https://nagifinapu.weebly.com/uploads/1/3/2/6/132696111/09f5178d2.pdfIn PDF document text
    • https://kufesolujuxubi.weebly.com/uploads/1/3/4/3/134373324/9dbbbde2878.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vasofirida/zujori.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/greek_mythology_weapons_of_gods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/2873/3862/files/world_religions_crossword_puzzle_worksheet_answers.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_off00007a4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4C 5564 bytes
SHA-256: 45013feebc7cb1fbf85f4c3651f92af310288f50042a9e47a6f1e552ae3b10ce
font_01_sfnt_off00008d2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D2C 10192 bytes
SHA-256: 009ff4e481e7f5fb97ed012b7d38ed2603ccc0176303424ca740c8432819b5e9