Malicious PDF — malware analysis report

Static analysis result for SHA-256 70b4746d4fe340e8…

MALICIOUS

PDF

43.4 KB Created: 2020-11-01 02:19:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 9600423269bd6f0060b31df939f336a1 SHA-1: 9fc7dac7f23a637864d8714cae06a5c8c7ef49ff SHA-256: 70b4746d4fe340e8336bb81eca8c2696475884f74170897de3044c4f2a701f27
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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.me/123?keyword=bird+island+nc+mailbox In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365639/normal_5f8e1e5bbed27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402710/normal_5f972132a8abb.pdfIn PDF document text
    • https://wesojejupeledaw.weebly.com/uploads/1/3/4/4/134446418/a431c4c9.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/tiladejonu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374537/normal_5f8af0ec24538.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/vebokupameseroru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379220/normal_5f8d6592f0dd1.pdfIn PDF document text
    • https://rokufekajo.weebly.com/uploads/1/3/0/8/130814342/2351746.pdfIn PDF document text
    • https://rimidewazasi.weebly.com/uploads/1/3/4/3/134317879/masagatagaf.pdfIn PDF document text
    • https://lifagixuwemup.weebly.com/uploads/1/3/0/9/130969738/69933d8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/ce63a5a9-6063-4567-a323-205653334c6f/fasemazadonemavo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca73616b-d95d-465d-8193-defdbf1ea533/1117436015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5394/8836/files/zurich_tourist_attractions_map.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005dae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DAE 4932 bytes
SHA-256: 11bfd2c3c83511eb7cc88181c6a452b5239deaa4db42a741c1476d58274aedd7
font_01_sfnt_off00006e3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3A 10888 bytes
SHA-256: 50eee51f60227e94376a0f5dbab29e1ed1b1451e424390711d369043704f478b
font_02_sfnt_off000092d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92D3 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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