Malicious PDF — malware analysis report

Static analysis result for SHA-256 de4fc57804eaef19…

MALICIOUS

PDF

46.4 KB Created: 2020-10-21 07:45:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-04
MD5: df527eef3ebeef335186253af9909222 SHA-1: c5a8dba6f4a70862b8553b986b0c3a25c6e89cb6 SHA-256: de4fc57804eaef199ba05b73fcc0462db6a358d2934d563bb12ad983b4a831dd
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://ttraff.link/123?keyword=livre+coaching+professionnel+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366055/normal_5f8757756f513.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366964/normal_5f88d60cce0bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377410/normal_5f8ca456bdcc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367000/normal_5f872f0515f4f.pdfIn PDF document text
    • https://vidojibirulon.weebly.com/uploads/1/3/1/0/131070792/be870852.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/73585260411.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/99798323938.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/alchemist_dnd_5e.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/fate_apocrypha_volume_1.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/basic_concepts_of_organic_chemistry.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/89437442076.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/manef.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/guia_aceites_esenciales.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/rigisasibonenosi.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/67814933635.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/condominium_property_act_in_sri_lanka.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370987/normal_5f8f6c9090520.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368747/normal_5f8b56d1f2ad9.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000074c5.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000074c5.bin)
    • 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 extracted file (font_00_sfnt_off000074c5.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C5 5416 bytes
SHA-256: 58699705f40a6d9d1c859ef668b5be34dee0584c3d10c5685ecd7e9566c8edee
font_01_sfnt_off0000872f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x872F 10384 bytes
SHA-256: e4c6feff674bbfacdd7306b7a5d84baab4453861a1a5b5d3eee08ef910a2f128

Open this report in the interactive analyzer, or submit your own file for analysis.