Malicious PDF — malware analysis report

Static analysis result for SHA-256 d48b74d9ebc663d9…

MALICIOUS

PDF

73.0 KB Created: 2021-03-03 20:24:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7ce6492c6c9178ca17c8a09df22d41a4 SHA-1: 4f433f95916b6ca613a7d1628d0b2da69bd4ef38 SHA-256: d48b74d9ebc663d994cd0e291793b89ec17405c52578edd74b33361c8a7cb48d
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://mezovuduw.ru/award?keyword=texas+food+safety+manager+certification+test+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4391899/normal_6009046c931ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469116/normal_600b33a85938e.pdfIn PDF document text
    • http://fruitik.space/57867922045pnb75.pdfIn PDF document text
    • http://folejaf.mypressonline.com/when_it_changed_joanna_russ_questions.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/how_to_invest_in_stocks_as_a_beginners.pdfIn PDF document text
    • http://sowopezamiw.medianewsonline.com/lejexafenuvopejulaxowig.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/xebuvuwov/4689175220.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/toyota_airbag_system.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/give_me_five_minutes_more_sheet_music.pdfIn PDF document text
    • http://jokosen.atwebpages.com/will_the_stock_market_crash_in_2021.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/64101906525.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/77963182944.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/cabinet_battle_1_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/zupunezele.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/philadelphia_eagles_injury_report_week_12.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/51402083020.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_off0000df54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF54 5520 bytes
SHA-256: b7f03c240a812998cf8fcee317b1f129fd9621a1fcc6939d60de28bdeb92d54c
font_01_sfnt_off0000f226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF226 10636 bytes
SHA-256: 3d9088b9480fa0ee7a6c3a2289d647f166e4167f51b20e1f2401a5ebc6a598c0