Malicious PDF — malware analysis report

Static analysis result for SHA-256 a46063f60fd0583d…

MALICIOUS

PDF

77.8 KB Created: 2021-03-01 16:47:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 83c1df19628c6e730ba9f5218f3cd6c5 SHA-1: ed3132947c9d4cd1a7186cdad04610553ed6d795 SHA-256: a46063f60fd0583dd0be734b6a7fbce1468e4348ba4c7ea8ae1b372ceb125bcf
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains and link farms, indicating a malicious intent to redirect users. The ML classifier strongly flagged this PDF as malicious. The presence of external URIs and the link farm heuristic suggest the document is designed to drive traffic to potentially harmful sites, likely for malware distribution or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://nipisod.ru/wix?keyword=timex+indiglo+instructions+24+hour+mode PDF link annotation
    • http://ctyr.ru/abolishing_performance_appraisalsjjtw1.pdfIn PDF document text
    • https://fuvapevamasazu.weebly.com/uploads/1/3/4/5/134507747/vaxabero.pdfIn PDF document text
    • http://vkysnaya-eda.site/kaththi_movie_songs_in_englishg5ioi.pdfIn PDF document text
    • http://sofoviwov.iblogger.org/dudura.pdfIn PDF document text
    • http://supariwepexafat.mywebcommunity.org/86161913540.pdfIn PDF document text
    • https://titoduxelet.weebly.com/uploads/1/3/5/3/135399046/2480226.pdfIn PDF document text
    • http://help-verification.com/ralurejhnvog.pdfIn PDF document text
    • https://teguvazotumeli.weebly.com/uploads/1/3/4/0/134041540/dilaturo_nozomedolilobis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427538/normal_5ff2c70e4665d.pdfIn PDF document text
    • http://feedbacrnz.space/carnatic_music_books_telugummim8.pdfIn PDF document text
    • https://gutavavoz.weebly.com/uploads/1/3/4/0/134000423/dulotomejalesak_fesaduj.pdfIn PDF document text
    • http://lebizifijafaxim.medianewsonline.com/xazugovedopepisif.pdfIn PDF document text
    • http://legiontry.online/free_sports_tv_guide_uknf2rm.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bozalusi.epizy.com/remotimud.pdfIn PDF document text
    • http://jafixomedimun.onlinewebshop.net/navy_bmr_study_guide_reviews.pdfIn PDF document text
    • http://wekujugom.epizy.com/employee_training_evaluation_form_templates.pdfIn PDF document text
    • http://gubadif.myartsonline.com/51902482006.pdfIn PDF document text
    • http://kifilexaxinazer.epizy.com/savosinudinawesef.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_off0000f576.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF576 5380 bytes
SHA-256: 54d50037379eec1aa5ee869a71ff41e1961b2afa316f31e925755c8861b0b36a
font_01_sfnt_off000107ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107AC 9900 bytes
SHA-256: 1b19140ec5fce06b3a5c507a266f5f46de960bee67e1a8da8290d89e5687da81

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