Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2c52fd0ed9cd9c3…

MALICIOUS

PDF

100.7 KB Created: 2021-03-16 11:38:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 28fe65f9985d9b9d3af0826a5e4c269d SHA-1: 6a373614541145162da9126b25035d5c0fca55cf SHA-256: c2c52fd0ed9cd9c3305b54ee403c2f35f0e4a7810644637f6a21e5ae56514beb
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, with one prominent URL pointing to 'dugedepap.ru', suggesting a phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a large number of links on disposable hosting, further supporting this. ClamAV detection as 'Pdf.Phishing.Trojan' confirms the malicious nature. No scripts were extracted, but the document's structure and embedded URIs strongly indicate a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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://dugedepap.ru/123?utm_term=divine+divinity+leveling+guide PDF link annotation
    • https://cdn.sqhk.co/tajiwikiter/i6mjcjc/lizajitedizevonerifo.pdfIn PDF document text
    • https://cdn.sqhk.co/rorifugera/nQidiaf/city_car_driving.pdfIn PDF document text
    • http://radafogibivos.iblogger.org/akutagawa_in_a_grove.pdfIn PDF document text
    • http://xezobofelupazat.22web.org/loferagus.pdfIn PDF document text
    • https://cdn.sqhk.co/pazaxefuma/genhbgh/the_chickens_have_come_home_to_roost_meme.pdfIn PDF document text
    • https://cdn.sqhk.co/fadejiweruw/gcggRG9/adventures_of_stickman_download_league.pdfIn PDF document text
    • http://xupenirulavep.iblogger.org/7th_grade_math_practice_worksheets.pdfIn PDF document text
    • http://xozoxas.iblogger.org/what_are_the_different_types_of_green_beans.pdfIn PDF document text
    • http://zomusip.iblogger.org/consumer_reports_highest_rated_washing_machines.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/liiXhcc/truck_wallpaper_for_my_phone_please.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://77a80da1-97a3-4b40-ba11-54c6d232eb66.filesusr.com/ugd/39a0fd_3f39d6d789584b41ad297e8bb1ddadd4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/muvarelo/gikexowefetijeselaj.pdfIn PDF document text
    • https://cda84be5-0c54-4c05-8389-97bb004c798d.filesusr.com/ugd/fa9f00_52ae340025c046a8b03ffeeb781df200.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nigimul/land_offer_letter_template_uk.pdfIn PDF document text
    • http://vedixerewe.epizy.com/first_alert_carbon_monoxide_date_on_back.pdfIn PDF document text
    • https://37991ae0-d72b-4ccf-bf90-288dedd591e7.filesusr.com/ugd/041b56_09a2c820e0934e99a4ea605ec0db43bc.pdf?index=trueIn PDF document text
    • http://gotazuvibidok.epizy.com/45502615097.pdfIn PDF document text
    • https://af18ad75-7652-4b25-b9e0-8da5fded0af1.filesusr.com/ugd/529385_8b41327904534a7dab2c97b2f7dca791.pdf?index=trueIn PDF document text
    • http://sezulezaba.rf.gd/gelakejupobusajejumimox.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/cartoon_network_anything_apkpure.pdfIn PDF document text
    • http://piwazazizalo.epizy.com/what_is_technical_report_and_types.pdfIn PDF document text
    • https://679cd94f-bb1f-411a-9684-d99498fe93d6.filesusr.com/ugd/ce16d4_4b0dc23f206640a193fb4a6e74501cc1.pdf?index=trueIn PDF document text
    • http://jeputujakajaj.epizy.com/17742089560.pdfIn PDF document text
    • http://pimisigejofal.rf.gd/que_se_significa_uniformemente_acelerado.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_off00014d89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D89 4668 bytes
SHA-256: 80be017eb7d9e1a0b3bd5da94994855e4da91840238d494daaf2b9d6a88e57ab
font_01_sfnt_off00015d9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D9A 11832 bytes
SHA-256: c295727fb6a1b42cfbcfc113a1204f3548901f1da5f382e549526f174953d9cf

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