Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e06ed5f1d4696f6…

MALICIOUS

PDF

61.0 KB Created: 2021-02-13 05:17:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e35f8a18700a55ef0f9865b974c2b8e8 SHA-1: a23393abbc931414ebe114cc8418d6cff4b16fe1 SHA-256: 5e06ed5f1d4696f6992c7a1596bf5b0d8c9193d76e6535a8016329b0dabe7ff8
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=ninjutsu+training+manual PDF link annotation
    • https://cdn.sqhk.co/tejilunuf/ShcS4u2/kosafakevafowuwikevur.pdfIn PDF document text
    • https://xarupome.weebly.com/uploads/1/3/4/4/134469096/dezugifuwu.pdfIn PDF document text
    • http://copyrightnotices-form.com/472812295040ihrp.pdfIn PDF document text
    • https://xunasumip.weebly.com/uploads/1/3/2/6/132696393/fedupipo.pdfIn PDF document text
    • http://dorightschool.com/55601858571zphq1.pdfIn PDF document text
    • http://procripton.com/haverhill_ma_police_accident_reportsoyqi5.pdfIn PDF document text
    • http://easy-money-cash.space/599896421449syhb.pdfIn PDF document text
    • http://fufibubesex.iblogger.org/democracy_worksheets_for_grade_6.pdfIn PDF document text
    • https://cdn.sqhk.co/vemudumuxixu/jc5ggif/50478991349.pdfIn PDF document text
    • https://jabiwogox.weebly.com/uploads/1/3/1/4/131453485/kexoxovi-satezama-nuxiwipovanege.pdfIn PDF document text
    • http://zowomojagobipur.iblogger.org/mifusujososowizomivato.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/wufujudisu/achtung_cthulhu_shadows_of_atlantis.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/74991925852.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/championship_manager_93_free_full_game.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/pneumatic_pipe_bending_machine_project_report.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/forms_of_potential_energy_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/absorbance_and_transmittance.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/adding_mixed_numbers_with_unlike_denominators.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_off0000b64e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB64E 5048 bytes
SHA-256: 625ddbad2bbd96fa38b8b0d20e30b5b5a1b0f459d2d12f10a955f7c9c34ee571
font_01_sfnt_off0000c76d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC76D 9440 bytes
SHA-256: 5afcf8ca1650436d6c78bc6d2ee4b9b8fd5db882b442dfbf7a009977fb4c25c2

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