Malicious PDF — malware analysis report

Static analysis result for SHA-256 17d66303536fd699…

MALICIOUS

PDF

74.5 KB Created: 2021-03-07 15:45:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1153520ac7b52a900e951e7ff491207a SHA-1: 9c2beba016fbf6939a1d53b24e585a3a39e368d2 SHA-256: 17d66303536fd69997a339e3caa0ef2214e0e80ef4acd50bf90a4c1995a96eab
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many of which point to disposable domains and redirector infrastructure, indicating a link farm designed to obscure malicious destinations. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. While no scripts were extracted, the PDF structure and URL analysis point towards a spearphishing attachment used to lure victims to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/strik?utm_term=johnson+9.9+outboard+motor+cover In PDF document text
    • http://eeuuurrrrr.space/chess_life_magazine_downloadxrfss.pdfIn PDF document text
    • http://zibanozoxepezu.iblogger.org/5965250783.pdfIn PDF document text
    • http://fopekoriw.sportsontheweb.net/boxing_defensive_techniques_for_beginners.pdfIn PDF document text
    • http://securityverifiedservices.com/utilitech_space_heater_instructionsz90lp.pdfIn PDF document text
    • http://faceit.su/lugosumutosakodatheoab.pdfIn PDF document text
    • http://aires.fun/how_much_is_ddp_yoga_on_demandplyob.pdfIn PDF document text
    • http://rolapisi.scienceontheweb.net/capsim_for_dummies_2020.pdfIn PDF document text
    • http://tcerkovniekupola.space/enter_the_kettlebell_or_simple_and_sinisterb7jl3.pdfIn PDF document text
    • http://volosaty100.xyz/sea_of_monsters_summary_moviexym22.pdfIn PDF document text
    • http://jobediniberine.scienceontheweb.net/career_development_individual_development_plan_examples_for_employees.pdfIn PDF document text
    • http://masito.space/85769665300288y0.pdfIn PDF document text
    • http://zatawonilar.iblogger.org/wedavezegeg.pdfIn PDF document text
    • http://mebutef.22web.org/alkyl_chain_conformation.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e691ad07-92dc-45fa-af10-8929b4045ede.filesusr.com/ugd/87b9a8_9746e086924946638a7cb7b711a93fd4.pdf?index=trueIn PDF document text
    • https://6cdf8c5e-36a0-4b6d-987f-32d3d50030cd.filesusr.com/ugd/3c2e2e_567786b41dca4e3185a9b8b6fb7a5d16.pdf?index=trueIn PDF document text
    • http://pigozezidum.rf.gd/landscape_bond_form.pdfIn PDF document text
    • http://viwuwijagabote.myartsonline.com/30610383107.pdfIn PDF document text
    • https://79d86aa2-23c4-4aa0-a0dc-c16ac59ae55d.filesusr.com/ugd/ecb701_b7507c9ee40c44c392b6a610c742b35c.pdf?index=trueIn PDF document text
    • http://dawiwafawuz.epizy.com/15909800340.pdfIn PDF document text
    • https://72cdfa97-b5fe-44cc-9aa9-3142b5aa642a.filesusr.com/ugd/ee32c9_68670c94643f4f3790cca59403bc1774.pdf?index=trueIn PDF document text
    • http://ziwemasux.myartsonline.com/4th_grade_grammar_quizzes.pdfIn PDF document text
    • http://kimawawasero.onlinewebshop.net/jack_reacher_never_go_back_netflix_country.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_off0000e817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE817 5524 bytes
SHA-256: cbef38ed700d827cb5c11284e7a5ed77368546442508116deb45767797c85706
font_01_sfnt_off0000fabc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFABC 9876 bytes
SHA-256: f7634ca7c1e566d3eae6f64a839790946f639c7290f88ab6db488f4c4a65b72a