Malicious PDF — malware analysis report

Static analysis result for SHA-256 c67ae3ea3f6dcf0a…

MALICIOUS

PDF

69.7 KB Created: 2021-02-21 21:39:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ea7c13dedb05117b69fe44bffab0184d SHA-1: 107c7ff591816f3ce69b530171ea538f426424ab SHA-256: c67ae3ea3f6dcf0a7abf8539fc888dd6e539b14cdf851a51438c38c774d1628d
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://jacksth.ru/wix?keyword=dassel+cokato+school+supply+list PDF link annotation
    • http://genusadnlo.space/xegamapejobelhct6.pdfIn PDF document text
    • https://dobopekajami.weebly.com/uploads/1/3/4/3/134314215/04dac909a1.pdfIn PDF document text
    • https://zuzivosojix.weebly.com/uploads/1/3/0/7/130775151/pasiwirajexudi_nobokadodamuw.pdfIn PDF document text
    • https://vegonivi.weebly.com/uploads/1/3/5/9/135986737/vanutimutexifu_nipafifigara.pdfIn PDF document text
    • https://fuxovibafisiboj.weebly.com/uploads/1/3/0/8/130874455/dirovipok.pdfIn PDF document text
    • http://bazis-rostov.com/sujet_bts_cg_2017d8vix.pdfIn PDF document text
    • http://philonio.online/certificado_de_origen_estados_unidos9thw4.pdfIn PDF document text
    • https://luzurojavozajin.weebly.com/uploads/1/3/6/0/136090511/df7322d68525.pdfIn PDF document text
    • https://cdn.sqhk.co/sazalevimit/fhjcEsT/47003529997.pdfIn PDF document text
    • https://dinuboxisoxim.weebly.com/uploads/1/3/1/8/131857966/910567.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/zodererezuzuxi/safuwuwi.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/tnis_vans_authentic_platform_2._0_checkerboard.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/bach_fugue_violin_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/pdf_file_to_word_doc_converter.pdfIn PDF document text
    • https://s3.amazonaws.com/jaloto/amendment_worksheet_bill_of_rights_1-_10.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/39391289739.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_off0000d5e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5E7 5092 bytes
SHA-256: c00c0dd09ca0cfb7030be4ff8834da2d2cc1e0b608928ebe5d0a2f87ef41a34b
font_01_sfnt_off0000e749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE749 10196 bytes
SHA-256: ab7f3f699188181a9304d9fe7dcf4c44c37124108a6ed52d7172633e1fe8963f

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