Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dde965fba1aaf4f…

MALICIOUS

PDF

89.3 KB Created: 2021-03-17 04:03:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 2ea46944a7063ad2fcaf5c239ff7473c SHA-1: 24f0134987a4fd41c37b91550431651e9745cb85 SHA-256: 5dde965fba1aaf4fcadfd6b0015196f7536d35561e72bed5558bdf60f4fb6b20
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting, and one specifically identified as a link farm. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a tactic to disguise malicious content within seemingly legitimate search results. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to phishing or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

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 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://botokaw.ru/award?keyword=homelite+330+chainsaw+manual+pdf PDF link annotation
    • http://lasiwefomibew.sportsontheweb.net/1653800393.pdfIn PDF document text
    • http://tusiteguluvora.getenjoyment.net/annie_script_2014.pdfIn PDF document text
    • http://vopugixeroramox.medianewsonline.com/70311769513.pdfIn PDF document text
    • http://gifagudilul.mypressonline.com/teaching_critical_thinking_skills_to_high_school_students.pdfIn PDF document text
    • http://coupons2020.info/butukavobodogakapefv9vh.pdfIn PDF document text
    • http://peskomment.ru/kaisi_yeh_yaariaan_episode_170uz1eb.pdfIn PDF document text
    • http://xijulefabogi.getenjoyment.net/pawnee_native_american_tribe_clothing.pdfIn PDF document text
    • http://shoop-fr.ru/v_shred_reviews_endomorphg5haq.pdfIn PDF document text
    • http://rejasepilibuxep.iblogger.org/free_flat_design_presentation_template.pdfIn PDF document text
    • http://deladinabixek.sportsontheweb.net/canard_pc_hardware_37_download.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://dajejumu.rf.gd/absolute_value_inequalities_word_problems_worksheet.pdfIn PDF document text
    • https://59e5a08b-0d8d-455f-a3a7-35a3b781ab3e.filesusr.com/ugd/784815_7aabb26da1644bbf864eba724aeb60d7.pdf?index=trueIn PDF document text
    • https://bbaef297-c986-4b42-acb3-0fd65605e280.filesusr.com/ugd/e9fc71_d52736da4f854281b2719e1a05bed61d.pdf?index=trueIn PDF document text
    • http://namulamix.rf.gd/41308418450.pdfIn PDF document text
    • http://dogolapobu.rf.gd/industrial_pipe_prices.pdfIn PDF document text
    • https://b3695a61-a5b7-457a-863f-99677d03e0cc.filesusr.com/ugd/f2a82d_4bcba07e49264e469919eb769a9d1cd4.pdf?index=trueIn PDF document text
    • http://fuguzametekobo.myartsonline.com/third_conditional_exercises_esl.pdfIn PDF document text
    • http://guminol.epizy.com/bestiario_mitologia_griega.pdfIn PDF document text
    • http://lavavoju.rf.gd/kagokilejiduretominevakop.pdfIn PDF document text
    • https://058da8ce-bb30-4b8c-81eb-8903018cac65.filesusr.com/ugd/ab745b_26f889151e364c09ae08f01f5cbd904c.pdf?index=trueIn PDF document text
    • http://tufukupetateto.epizy.com/95634948061.pdfIn PDF document text
    • http://xogejutir.rf.gd/pioneer_deh_80prs_manual.pdfIn PDF document text
    • http://ralirajuz.atwebpages.com/miputiwowikozevovu.pdfIn PDF document text
    • https://8d67285a-e3c5-4820-bb1a-bb91ce1079a6.filesusr.com/ugd/d54300_6e3ee35560ee4ebca9e3b7c07f443bab.pdf?index=trueIn PDF document text
    • http://tobidogajetu.onlinewebshop.net/boris_cyrulnik_libros_gratis.pdfIn PDF document text
    • http://kizuwopo.epizy.com/vutosojebimulej.pdfIn PDF document text
    • http://javasuk.epizy.com/racing_car_game_please.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0B 3984 bytes
SHA-256: 22f7284a2a665a635fbad0b05067e5381ac0f1b0b3bf2b86df645b796be66933
font_01_sfnt_off00010d35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D35 5540 bytes
SHA-256: 1ebca202ceca471cd894a9b47fe689b514479e128d263bc1a9a5b83b895057b0
font_02_sfnt_off00011ff6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FF6 12000 bytes
SHA-256: 73cab0ea547d4d9d711cc0031edc6dd8ab4a9ae95cc08cb24a97bda5e7c5319c
font_03_sfnt_off000148ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148EE 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

Open this report in the interactive analyzer, or submit your own file for analysis.