Malicious PDF — malware analysis report

Static analysis result for SHA-256 49c8e38d43d200df…

MALICIOUS

PDF

67.5 KB Created: 2021-03-05 13:43:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d2e90df8e268ceb80058c96e61dfd512 SHA-1: 03841b1a07e3c23ffee6d671592cb12555004488 SHA-256: 49c8e38d43d200dfe3f4d6bca542325c39d9bff3ed1fb117439abdba4a1fc61b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/strik?utm_term=eat+well+for+less+new+book+2020 PDF link annotation
    • https://cdn.sqhk.co/nigudovowa/gdjbzih/lupejobaje.pdfIn PDF document text
    • https://cdn.sqhk.co/jefapukawore/Giehiij/43462013533.pdfIn PDF document text
    • http://jefevivavifax.scienceontheweb.net/academic_writers_online_jobs.pdfIn PDF document text
    • https://cdn.sqhk.co/jijasitov/fji4Wk8/new_york_city_fc_jobs.pdfIn PDF document text
    • http://pafekusiwajida.66ghz.com/hemophilia_prophylaxis_guidelines.pdfIn PDF document text
    • https://cdn.sqhk.co/kowalaxu/chcVHif/catfish_cooley_funny_videos.pdfIn PDF document text
    • https://cdn.sqhk.co/popenewosaso/jgP1jj1/watug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/medavie_blue_cross_insurance_forms.pdfIn PDF document text
    • http://rewezaxow.epizy.com/livigowim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24d1c5cb-06ec-4bbc-9baf-7a0a7d2bbcef/common_core_sheets_fractions_number_line.pdfIn PDF document text
    • http://buzuxujov.epizy.com/sabigunipadixukovefo.pdfIn PDF document text
    • http://kaloruligot.onlinewebshop.net/fundamentals_of_digital_logic_with_vhdl_design_solutions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a36d70a-e78c-4b18-a355-c9772fa92681/audio_driver_for_windows_7_dell_vostro.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/14219764518.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc75c388-061a-4e0c-81da-85bce97d5a2a/kobodujijoposijilusupumu.pdfIn PDF document text
    • http://rabatelekovufar.myartsonline.com/sennheiser_xsw-d_lavalier_set_digital_lav_wireless_system.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/sigodowakoretoralet.pdfIn PDF document text
    • https://s3.amazonaws.com/farokof/is_the_root_word_phon_greek_or_latin.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_off0000cc47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC47 5288 bytes
SHA-256: 861abadbab1c87ecfab558d6c481b846cec4cc75dd698c349388c19b142e2cd7
font_01_sfnt_off0000de6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6F 10108 bytes
SHA-256: ab0cef2a5d046397433696bc99cd3a6763cb289cab6ea2fcd91898fae267f9da