Malicious PDF — malware analysis report

Static analysis result for SHA-256 011fe8e35990189e…

MALICIOUS

PDF

44.9 KB Created: 2020-10-19 15:49:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e39287c1a89da0b1c65ecdc92422f4cc SHA-1: fd89233ee88ba62e2d722bc8caaa6c81d5a38c23 SHA-256: 011fe8e35990189ed2e8f04f579e4f50688748b8c525bfd82961f73208a668c0
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/strik?keyword=legado+de+los+toltecas In PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/1000608.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/safado-fodidunixoso.pdfIn PDF document text
    • https://dojulukasinu.weebly.com/uploads/1/3/0/7/130776790/4611e.pdfIn PDF document text
    • https://gemenudotipetal.weebly.com/uploads/1/3/2/6/132695720/fca1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374951/normal_5f8d87ef92b42.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378393/normal_5f8d18dd2c9e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367297/normal_5f894ecc31427.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369781/normal_5f8a112a56970.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366654/normal_5f8734a937abd.pdfIn PDF document text
    • https://poxobavu.weebly.com/uploads/1/3/1/4/131453713/wijifazave_ramerebuga_jokuxewagixeru_zinuti.pdfIn PDF document text
    • https://desaviguwogo.weebly.com/uploads/1/3/1/8/131871994/e9bac172f8.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/newuwaka_tepotogu_jinuxadajijepix.pdfIn PDF document text
    • https://mamexobupelo.weebly.com/uploads/1/3/1/3/131383482/rorosikezoseri.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/9247351.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/efd731bd-c540-4511-8c30-9a67bd22c8c8/viaje_al_oeste_cazador_de_demonios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b8a9e05-97e1-40f6-b988-91b8165b7f01/matemidonetiviw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fa09fee-062e-4c5f-a65c-3b7a8b087e4e/werune.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9ee1f5b-1c8f-481a-a157-b299508df58d/kezalixumodukufutez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6035/3429/files/jefamuxuxeberejubeti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2094/9403/files/78993409422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/8650/1806/files/conjunctions_worksheets_for_class_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8059/0524/files/76931907732.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c78309f5-78f6-40b7-be6c-a9aa54886eb6/dopawipamirulurikeji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34324afd-4779-4625-bb50-6d0f55908921/92737963270.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_off000071b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B6 4952 bytes
SHA-256: 14888e0d70ccb8687db5d93b383805429834d98c217ac69ef4f508c2b771ed2c
font_01_sfnt_off000082a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A9 11084 bytes
SHA-256: f5ba63d9ab07f8ab9ba52c3b0736306adfd49cd1d235854b9d51fdd584b8ecd0