Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fa056d7633e01eb…

MALICIOUS

PDF

71.0 KB Created: 2021-02-11 22:45:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5c02e46f2deae4cc9909323c4d5f6a19 SHA-1: 18a434b77a52e2330af17d946c189e4801aff37a SHA-256: 4fa056d7633e01eb61c7e9b08e3b476b76bf9c4b0a2557192142fdaeaf82b328
136 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://bologen.ru/wb?keyword=adobe%20audition%20cc%20pc PDF link annotation
    • https://cdn.sqhk.co/gadewekunel/wJijbpr/67516384207.pdfIn PDF document text
    • https://cdn.sqhk.co/jaselavujuwi/ihibvdO/peliculas_en_cinemark_guayaquil_mall_del_sol.pdfIn PDF document text
    • https://cdn.sqhk.co/dogutadova/9gdgije/food_wars_recipes_egg.pdfIn PDF document text
    • https://cdn.sqhk.co/wevexifimur/YDhdfqb/top_100_mobile_games_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/torujazelome/5UhegMs/fall_guys_mobile_ad.pdfIn PDF document text
    • https://cdn.sqhk.co/gukugifixija/gYgdvii/28627218029.pdfIn PDF document text
    • https://cdn.sqhk.co/goberirud/ifgichj/gufurobosojunujozof.pdfIn PDF document text
    • https://cdn.sqhk.co/sadebupunen/bDgelll/74012546023.pdfIn PDF document text
    • http://nimiridisavir.22web.org/hertz_incident_report.pdfIn PDF document text
    • https://cdn.sqhk.co/xonafelog/gjj0YJ4/atom_usd_price.pdfIn PDF document text
    • https://cdn.sqhk.co/foseziwate/zhdigia/66214988201.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wivoruremuwun.rf.gd/honours_1st_year_marksheet_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/patozimugor.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/halloween_math_worksheet_for_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/webavokunavo.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/wojupadolilupizusawapa.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/glade_aerosol_air_freshener_safety_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/43319030369.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_off0000db4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB4A 4888 bytes
SHA-256: 8d9d858b4398cbe988c209eca705ac849180d0dadbb59f224e9f8c58125fa826
font_01_sfnt_off0000ebff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFF 10352 bytes
SHA-256: ddf310c95e5967de53c3b76d6ec3c674ec3bbc7a1cf56fab249860999aa535e0