Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3d545532d07ed3…

MALICIOUS

PDF

87.0 KB Created: 2020-10-15 00:12:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: e584cd89d05abe92bc93079e41ab3431 SHA-1: fd08fcdb82b86b082ec5517e988e4edcdf7944aa SHA-256: 4e3d545532d07ed3a287e278052b309fb3b6d0f6cc6a91614a2e9c7585b442f3
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://cctraff.ru/strik?keyword=social+phobia+rating+scale+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366031/normal_5f875645cd5f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_5f8701c5b0076.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366958/normal_5f87698c2f7ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366331/normal_5f8757f91da52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366063/normal_5f87692313387.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f872695e1dd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367951/normal_5f8769c5e6732.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f871c3d99f65.pdfIn PDF document text
    • https://site-1036835.mozfiles.com/files/1036835/86313161463.pdfIn PDF document text
    • https://site-1036695.mozfiles.com/files/1036695/66198279970.pdfIn PDF document text
    • https://besavikeneg.weebly.com/uploads/1/3/2/8/132815808/fufeg.pdfIn PDF document text
    • https://lagukekejase.weebly.com/uploads/1/3/0/8/130815031/pumufumaz_dekexijejiwisik_tijibipewiv_zefov.pdfIn PDF document text
    • https://loguxofe.weebly.com/uploads/1/3/0/7/130775118/bc44ba.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ligewajinaxi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b03210b3-1df2-47ff-b50f-2d3e77e5d47b/fegam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c7cee05-c936-485b-93c2-498d0780ef73/80174642302.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e696a3a6-c19f-4a1f-9b95-b921113cc33a/45602368291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9270/0062/files/70267506327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3795/7537/files/kagedawuzekozodemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5447/9515/files/90639023793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/bererodibanokej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2862/9662/files/sunbeam_f2_error.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_off00010808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10808 5660 bytes
SHA-256: 3814ba2312384a2e031537cb117229d73a0f1b88d7984845a359d322c9188215
font_01_sfnt_off00011b2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B2D 16488 bytes
SHA-256: 13033c09e7b3e096d5caf98e6c5b1b03c5ab8b656454acc3c6209b54e3f0b321

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