Malicious PDF — malware analysis report

Static analysis result for SHA-256 42584b78d05d8b23…

MALICIOUS

PDF

46.3 KB Created: 2020-10-26 11:50:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-15
MD5: 7cb18072d1d88a1f3c59274c01a05004 SHA-1: 51c6ee9efd149895e3c0a741c44fd452403d6240 SHA-256: 42584b78d05d8b238949fba9da8346f79a08fdf1da506db7f40247036634971d
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://gettraff.ru/wb?keyword=excel%20find%20duplicates%20in%20multiple%20worksheets In PDF document text
    • https://nuvisinuxaxo.weebly.com/uploads/1/3/1/3/131383681/8406064.pdfIn PDF document text
    • https://juzugimigiroteg.weebly.com/uploads/1/3/2/3/132302883/05478bdc4.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/risujinenabus-zudomosimoko-nesexob.pdfIn PDF document text
    • https://poxuxeket.weebly.com/uploads/1/3/3/9/133997588/4596365.pdfIn PDF document text
    • https://jezaxegare.weebly.com/uploads/1/3/1/3/131380636/sotivugijabosasawivu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366627/normal_5f8727ac72d50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390996/normal_5f8edf25e7b47.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/wilugugo/2185744643.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/69886849633.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/bekibuzuju.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/gagozopewepiv.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/10_avatars_of_lord_vishnu_in_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/buku_akuntansi_dasar_kelas_10.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/tsc_annual_leave_form.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/du_bsc_chemistry_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6953/7956/files/8674471997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2094/9403/files/imaginative_writing_samples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6993/1172/files/importance_of_water_in_the_body_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/6424/8470/files/cyberpower_ups_825va_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3196e90c-5765-4b42-9b15-c9a05f5f8b7b/zolopu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dea1dcb0-4963-4e0b-9dbd-2aac4d6c0e9f/2562862874.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc473373-2976-4364-8893-127d17dda59d/51395033299.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3077ad64-3948-4bcd-9b0c-27d94e587b54/divisin_sexual_del_trabajo.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_off000074e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74E5 5576 bytes
SHA-256: eb3db2c57c97bbcd89c1f3d5d8e3006a479de61f4085f8ffbcc9772d71349315
font_01_sfnt_off000087c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C0 10544 bytes
SHA-256: 8dc3d48423ae721e4eb4ccfe48be4341fc8fe7a1866f47416cc9b816534f774c

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