Malicious PDF — malware analysis report

Static analysis result for SHA-256 1af48ad8f5851961…

MALICIOUS

PDF

72.4 KB Created: 2021-02-11 22:00:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f1ec24020adfe55746445c75a6b5d1b1 SHA-1: 0aca1fdf97fec4a739ccd97112a8d2ab9ceba317 SHA-256: 1af48ad8f585196147f28703617e152ef2e5fa4e07db3b1266a22020d4e17099
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wix?keyword=ac+market+apk+download+apkpure PDF link annotation
    • https://niwurepezexeted.weebly.com/uploads/1/3/5/3/135312419/rogaga.pdfIn PDF document text
    • http://kulokozataxat.22web.org/bol_tere_mithe_mithe_song_3gp.pdfIn PDF document text
    • https://sinofokum.weebly.com/uploads/1/3/5/3/135316266/nusiwidadara_gojuk.pdfIn PDF document text
    • https://jojusilinu.weebly.com/uploads/1/3/4/3/134343509/dudepotogujut.pdfIn PDF document text
    • https://poxawakepuk.weebly.com/uploads/1/3/1/6/131606289/001dee4.pdfIn PDF document text
    • http://zewegirugiputix.22web.org/utilitarianism_vs_deontology.pdfIn PDF document text
    • https://pozemake.weebly.com/uploads/1/3/0/7/130776760/wafusopixegenaxaka.pdfIn PDF document text
    • https://jameropavide.weebly.com/uploads/1/3/4/6/134699307/zuniv.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/navoburarovada/free_editable_cv_template_doc.pdfIn PDF document text
    • http://tajiralilumes.epizy.com/adoption_application_form_alberta.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/weekly_tasks_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/entrepreneurship_book.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/naruto_shippuden_ultimate_ninja_blazing_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/wabuxirowamol.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/volleyball_court_lineup_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/butagone.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/uk_tourist_visa_application_form_from_kuwait.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_off0000ddd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD1 5184 bytes
SHA-256: 4c5f5f04a5a805b503d465198d836881b6d1f16c41e430e15ef6419d4282b977
font_01_sfnt_off0000ef72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF72 10892 bytes
SHA-256: 2f1b83348511b9ae08e3b7c9fdc07bedf64afa4440f6d7fbe36ed3af23e11d7c

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