Malicious PDF — malware analysis report

Static analysis result for SHA-256 416d617c3a397e38…

MALICIOUS

PDF

50.3 KB Created: 2020-11-02 07:44:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: d950ddf97f04c91be21531de56d0f7c2 SHA-1: 0a1b2f4286ffb2a888e1ada0e85e7aa0878f4b7e SHA-256: 416d617c3a397e3863e78c952f2678eed68cf67e4559feb9fe42aa09e8008048
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.me/123?keyword=swfa+ss+3-15x42mm+tactical+rifle+scope In PDF document text
    • https://gesofomudejow.weebly.com/uploads/1/3/4/3/134344239/3817577.pdfIn PDF document text
    • https://xexasatokotubeg.weebly.com/uploads/1/3/4/3/134354060/8529191.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/fopiwoxu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384639/normal_5f9de921e27d3.pdfIn PDF document text
    • https://juzugimigiroteg.weebly.com/uploads/1/3/2/3/132302883/ruriwamodajofu-rumijov-peforomazeva-joximox.pdfIn PDF document text
    • https://voperupazekeko.weebly.com/uploads/1/3/4/5/134505312/risukivisaji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369907/normal_5f8bdff47f7de.pdfIn PDF document text
    • https://lesavudipuvu.weebly.com/uploads/1/3/4/3/134338744/visuzab_fomajekotila_lixibexuwop.pdfIn PDF document text
    • https://mimitokiwunas.weebly.com/uploads/1/3/4/0/134012498/387585.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/lijopavexanuse/21099646887.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/54796884804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6662/9032/files/bikukogubulubivefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0468/0312/4375/files/1494157544.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_off000082ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82EC 6016 bytes
SHA-256: 71520d98be98d712f74b45db63aa586a55b411b64d90d932428d1b3954afa57d
font_01_sfnt_off0000977f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x977F 10804 bytes
SHA-256: da5dd3e6f2ed36440aa1aa22413a10f00500ace9a3ceb6eab3fadc3ad0cb1d86

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