Malicious PDF — malware analysis report

Static analysis result for SHA-256 31743daf029421e4…

MALICIOUS

PDF

67.4 KB Created: 2021-03-05 14:47:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9f514bf43b50d20a76d7b53205ee8f6d SHA-1: 28fa786b5445f463f4eddceedfe084ff956c623b SHA-256: 31743daf029421e40083cabe97d8d5f1a2d4b209c673a4fbc37624a38c238eeb
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/wix?keyword=desert+ridge+high+school+bell+schedule PDF link annotation
    • http://watogoda.mypressonline.com/91370372098.pdfIn PDF document text
    • https://cdn.sqhk.co/lasokixon/fQwRfkX/cake_making_games_free_download_for_windows_10.pdfIn PDF document text
    • https://cdn.sqhk.co/dugelabomaw/djgjeif/duets_movie_freebird.pdfIn PDF document text
    • http://wuzubofetaxoger.iblogger.org/bovekesegipokuxog.pdfIn PDF document text
    • https://tiforunu.weebly.com/uploads/1/3/1/4/131437018/nexesoxulejaf.pdfIn PDF document text
    • http://dehydratedoriginalgoodness.com/sample_demand_letter_to_contractor_to_complete_worki5525.pdfIn PDF document text
    • https://zaxewunatomilar.weebly.com/uploads/1/3/4/1/134131499/4a7c7.pdfIn PDF document text
    • http://revershjtb.site/fegugasirabaxetudkrh9w.pdfIn PDF document text
    • http://white-x.fun/automatic_vs_manual_car_insurance3xt93.pdfIn PDF document text
    • https://sinegozedajosor.weebly.com/uploads/1/3/1/8/131871849/a501d6773d4842d.pdfIn PDF document text
    • http://kigurumi.org/laws_of_power_bookpqgi6.pdfIn PDF document text
    • https://cdn.sqhk.co/gapebeve/jeGiuZm/you_break_the_glass_ceiling_meaning.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/dojusimawurinifufitigaxo.pdfIn PDF document text
    • http://mujoxoluvisukid.getenjoyment.net/what_does_dress_down_day_at_school_mean.pdfIn PDF document text
    • http://dorulezebum.sportsontheweb.net/vobepepefanozetuluru.pdfIn PDF document text
    • https://cdn.sqhk.co/tosobulig/pggZC7Z/my_smart_blinds_kit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ede8a7a3-2377-4e09-926a-401222b31c25.filesusr.com/ugd/81c89d_7dd9054fbb7d463ba93c8da66810d364.pdf?index=trueIn PDF document text
    • https://d8ec88ce-93b1-4b83-b294-7016fd5b5063.filesusr.com/ugd/366252_0dc518a7680e47ff9056aba3fa16bb3b.pdf?index=trueIn PDF document text
    • http://nununad.myartsonline.com/15868246968.pdfIn PDF document text
    • http://dafitigare.epizy.com/zamalegobipivemedesubabe.pdfIn PDF document text
    • http://rewifavad.epizy.com/mammography_screening_guidelines_2019.pdfIn PDF document text
    • https://0e9c393c-9feb-4465-ae9d-4486bea7a644.filesusr.com/ugd/4b68be_5b9e392ed2544180a448653da566a032.pdf?index=trueIn 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_off0000ccc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCC2 5132 bytes
SHA-256: e3cd707aa0fced82c7ad2644580447eb81b2a91ec5b486d83272dab1a1cd67c5
font_01_sfnt_off0000de33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE33 9904 bytes
SHA-256: 3c0def0492548866481e9e9cdc364bb06ffbebd50e6d7406ef4ac9851ccbd601

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