Malicious PDF — malware analysis report

Static analysis result for SHA-256 de4af57806e8b289…

MALICIOUS

PDF

79.4 KB Created: 2021-03-01 18:11:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-04
MD5: c2a5b883bf5120c66210e1310e87c02c SHA-1: 4539a429d1b28cdfcc7081a5f32e598176d1dec2 SHA-256: de4af57806e8b289f3c8432f3007057d6c79bb99d10a8ff5b07d4625b3502e66
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dafemum.ru/wb?keyword=is%20coachmen%20a%20good%20rv In PDF document text
    • http://blognews.top/88488908458lk9ca.pdfIn PDF document text
    • https://guzajemifuraruv.weebly.com/uploads/1/3/0/8/130874286/zifupigifibudo.pdfIn PDF document text
    • http://zabolojisag.getenjoyment.net/harry_potter_book_2_review.pdfIn PDF document text
    • http://wijasagasipode.getenjoyment.net/iso_9001_version_2015_clause_7.5.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/50801741362.pdfIn PDF document text
    • https://panebelodoz.weebly.com/uploads/1/3/4/6/134619461/6212349.pdfIn PDF document text
    • https://lamamamim.weebly.com/uploads/1/3/1/6/131606140/larajadododijenir.pdfIn PDF document text
    • https://gazoxawirola.weebly.com/uploads/1/3/4/5/134588870/gujafered.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/58195886029.pdfIn PDF document text
    • http://seomagnat1.online/3d_character_making_software_free_download3ymm4.pdfIn PDF document text
    • http://topplafond.xyz/reinforced_concrete_design_by_besavilla_free_download954tx.pdfIn PDF document text
    • http://pewadulojuba.mypressonline.com/fisuburas.pdfIn PDF document text
    • https://bojepelesu.weebly.com/uploads/1/3/5/3/135350442/romokuxudu_nutuwogogijol_gezoxudom.pdfIn PDF document text
    • http://gnoogle.site/malshej_ghat_weather_reportgsazx.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/destiny_2_black_armory_raid_guide.pdfIn PDF document text
    • http://nizavevorupuj.mywebcommunity.org/sutemetur.pdfIn PDF document text
    • http://heleogose.online/kumoxozitajilaeu2.pdfIn PDF document text
    • http://studytogether.fun/kitchenware_list_items0o4mx.pdfIn PDF document text
    • http://rte-ita.fun/14254316433r0lg7.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/99676387223.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000f945.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000f945.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_off0000f945.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f945.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF945 5316 bytes
SHA-256: e6df856cf996a50962acc59d8080a24009a808f5c9e2095761bd38642eb6f2de
font_01_sfnt_off00010b35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B35 10892 bytes
SHA-256: dee072c7f9ebdb2834bc2d2ea1551975fef4148831dcca18ffef80f4be2c4197