Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eb43ec878efed55…

MALICIOUS

PDF

44.0 KB Created: 2020-10-28 12:04:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 20474d47aac0ee2e96f5a532a9136fa5 SHA-1: 866bc2f7d0f15e8a9bf8c8794cfc687c5c7d3ea5 SHA-256: 6eb43ec878efed559fa25d07533d3c8a35fd82956ca9124660dbddab9ca578f7
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.club/123?keyword=libro+redescubriendo+el+catolicismo In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365624/normal_5f87153827367.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368506/normal_5f8d2fd414cdb.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/debizikirapanas.pdfIn PDF document text
    • https://jelamiwigu.weebly.com/uploads/1/3/1/3/131382248/womikiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365606/normal_5f8a27ad25cb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369165/normal_5f90895c79743.pdfIn PDF document text
    • https://vewusijonaw.weebly.com/uploads/1/3/4/4/134489037/c86b4c27268da7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367019/normal_5f9377b66f619.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423442/normal_5f98251149c2b.pdfIn PDF document text
    • https://vekaluledezo.weebly.com/uploads/1/3/4/2/134235689/vefejomuxageko_nosiwave_netubovej_tirabafinu.pdfIn PDF document text
    • https://sejevijuwev.weebly.com/uploads/1/3/2/7/132712154/0cecc72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415531/normal_5f98ad5728da9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375361/normal_5f8f38ede827a.pdfIn PDF document text
    • https://suganolorifumu.weebly.com/uploads/1/3/0/8/130814011/fe865465.pdfIn PDF document text
    • https://towetebofipu.weebly.com/uploads/1/3/1/4/131437669/1617455.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419654/normal_5f98ccf103f0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376849/normal_5f932e647bc8d.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/1/0477/1954/7036/files/technical_english_1_teachers_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9620/2652/files/keyboard_songbook_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1070/6619/files/kimemagaxarepejinavij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7446/1594/files/northwood_basketball_roster.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5916/2521/files/carrinho_chicco_ohlala_manual.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_off00006b0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B0F 5168 bytes
SHA-256: 5f2d89ddfdb100b7bb6fa157a9358870fb853edb46f4cdcdf3166b02f2591881
font_01_sfnt_off00007c8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8C 11308 bytes
SHA-256: 640d67f416f42521a462b9f42359584b61288d2eeabd7b4d01bbfe411cbd502a