Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6db236fe5ed2d82…

MALICIOUS

PDF

79.8 KB Created: 2021-02-22 21:06:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: d14a2aa7e68fe0c8b96068dc54e58ec5 SHA-1: f05f77c044893472cabec7fec028e41e061684d0 SHA-256: a6db236fe5ed2d82c36381ad65f991d82f0ac63c19044615fb724e3c2d45b272
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of external links, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The primary URL identified, 'https://leonvi.ru/123?utm_term=ultimate+ears+boom+speaker+review', suggests a phishing or scam attempt disguised as a product review. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution through the linked PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://leonvi.ru/123?utm_term=ultimate+ears+boom+speaker+review PDF link annotation
    • https://worivoka.weebly.com/uploads/1/3/4/5/134588103/javuwixefuruv-sisivipozugoxu-luvikore-laxagalalega.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444875/normal_5fe553b5e4201.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367960/normal_6015d31e3212b.pdfIn PDF document text
    • http://fawotewikobafis.iblogger.org/barrera_hematoencefalica.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489247/normal_602f273520898.pdfIn PDF document text
    • https://xinomufe.weebly.com/uploads/1/3/4/7/134706409/vusar.pdfIn PDF document text
    • https://bemetezebore.weebly.com/uploads/1/3/4/8/134882820/zejekevus_sukogabalo_nodofufizune.pdfIn PDF document text
    • http://babubusawase.22web.org/fomatesoxazepijavis.pdfIn PDF document text
    • http://kopolade.22web.org/zemasigusuxijebujafela.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://gosefemifav.epizy.com/comptia_security_study_guide_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/girilifawuxi/bang_bang_full_movie_720p_filmywap.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/video_quiz_hero_battleship_game_answers.pdfIn PDF document text
    • http://naremijex.epizy.com/wuvegati.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/fezikafi.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/jodixegixuvejizile.pdfIn PDF document text
    • https://s3.amazonaws.com/falejogajir/what_does_the_us_constitution_say_about_voting.pdfIn PDF document text
    • http://jarebavax.epizy.com/is_300_lexus_2021.pdfIn PDF document text
    • http://jifigazanovew.epizy.com/22871097758.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/answer_on_thank_you_email.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/cypher_of_the_old_ones_cheat_sheet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECCE 4992 bytes
SHA-256: a4d8c6a64876ad9c784f84107db2ace249fcaefdd394f17ab4b11a50acf83a3d
font_01_sfnt_off0000fdcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDCD 10800 bytes
SHA-256: 67e185376488f43a5c5188ca9a01c1c03bb925d3f30f237813502fc431af7bdf
font_02_sfnt_off00012269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12269 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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