Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f010684a77e8a1…

MALICIOUS

PDF

464.5 KB Created: 2022-03-18 14:26:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-02
MD5: ac5c18a96d76cbf3f936e7d2cc4acbe7 SHA-1: 2e73d7fc1d73642739c46509e81fcb98a1a8db2a SHA-256: a4f010684a77e8a14f1ee79e281028fddd4c951e4b2003e28edd53abb16cb11e
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4319

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
  • 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.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://yubit.co.za/XSRYdR1H?utm_term=writing+skills+worksheets+grade+8 PDF link annotation
    • http://zekidilektekstil.com/images_upload/files/kekidopawekopasaja.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/bd3e94c53ac8c1bde4c3d478e12463fb/weturedegagoxasaf.pdfIn PDF document text
    • http://syscall.com.tr/panel/kcfinder/upload/files/71588067197.pdfIn PDF document text
    • https://zahidnawaz.com/UploadedImages/image/5620468284.pdfIn PDF document text
    • http://akgwealthplanner.com/crm/files/29746586775.pdfIn PDF document text
    • https://test-ajpianos.lapetitemaisonduweb.fr/upload/files/xorodasuwetevejeg.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/c9e78b5729f693c8265fa2304c2b3a2f/wotisabixaxudekawaxava.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16212fe1393908---bofewelaza.pdfIn PDF document text
    • http://anpo.vn/upload/files/55624516950.pdfIn PDF document text
    • http://anpamedical.com/kcfinder/upload/files/38069935337.pdfIn PDF document text
    • http://spprp.pl/userfiles/file/48805778681.pdfIn PDF document text
    • http://varnamonarradio.se/admin/kcfinder/upload/files/80822148548.pdfIn PDF document text
    • http://sadbaindia.org/admin/kcfinder/upload/files/rapepepog.pdfIn PDF document text
    • http://talentfuturesservices.com/sharpinstitute/images/files/56449988507.pdfIn PDF document text
    • http://cuacuonbinhduong.com/upload/files/19704442710.pdfIn PDF document text
    • http://shengnabei.com/uploadfile/file///2022020521501418.pdfIn PDF document text
    • http://reedleisureproducts.ca/site-uploads/92380813256.pdfIn PDF document text
    • http://robertfeinberglaw.com/images/edit_images/file/fuferiwalaxumegokokas.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/9c7bsp5idlbd8qdgsu8dn9pq5s/nijelomavagomopesen.pdfIn PDF document text
    • http://fanti-fitness.pl/uploads/assets/file/26263765529.pdfIn PDF document text
    • https://marblobaths.ph/app/webroot/img/files/xatamanabepukuseguwu.pdfIn PDF document text
    • https://webseitenvergleich.com/newerac2c/userfiles/file/gidaroji.pdfIn PDF document text
    • https://haysalon.com/public_html/userfiles/file/mutesuvorofalixogaz.pdfIn PDF document text
    • http://kondicionery-lobnya.ru/upload_picture/file/64411877588.pdfIn PDF document text
    • http://madervaf.com/admin/kcfinder/upload/files/mesaralusipatiju.pdfIn PDF document text
    • https://kancelaria-wawrowska.pl/files/files/wobesazivepivegevi.pdfIn PDF document text
    • https://www.jobswolf.com/app/webroot/kcfinder/upload/files/89736536630.pdfIn PDF document text
    • http://atut-biuro.com/uploaded/file/zomulotudapepi.pdfIn PDF document text
    • http://gillsandgeckos.com/userfiles/file/fozusir.pdfIn PDF document text
    • http://epmresearch.org/userfiles/files/dovoviv.pdfIn PDF document text
    • http://daiichibus.vn/uploads/news_file/dujadimarufovo.pdfIn PDF document text
    • http://boldogelet.hu/media/58704652286.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620096ff5168b---sawukafaxovewemug.pdfIn PDF document text
    • http://retrolondontees.com/userfiles/file/rojafaxaviw.pdfIn PDF document text
    • http://bdsductri.com/upload/files/somogipifupafopul.pdfIn PDF document text
    • http://ledseoul.com/userData/board/file/35287282588.pdfIn PDF document text
    • http://teedinmaesai.com/user_img/file/fidofiwevuwokesi.pdfIn PDF document text
    • https://apartmani-mestrovic-krk.hr/files/60402202318.pdfIn PDF document text
    • https://arrayamed.com/userfiles/file/18393771215.pdfIn PDF document text
    • https://suacuachuyennghiep.com/uploads/files/97330218842.pdfIn PDF document text
    • https://bmw-zona.ru/uploads/file/31024922338.pdfIn PDF document text
    • http://belovosushi.ru/files/masititaxufasukiwujog.pdfIn PDF document text
    • https://batdongsandothanh.vn/luutru/files/62837984292.pdfIn PDF document text
    • https://braintreeclinics.com/app/webroot/img/files/niwosijerasulitenaba.pdfIn PDF document text
    • https://szemere-iskola.hu/images/files/68639220176.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
    +4 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0006d1e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D1E4 10908 bytes
SHA-256: bb5a1126fd1326b8bcfaf3aafae8a12f09120ec3cac0d0b7dab0d92f0c8be832
font_01_sfnt_off0006eaed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAED 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00070213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70213 17684 bytes
SHA-256: 19d097690aa54b70e8100e7ec56cd58f51ef0956f468a4289fa4ff9e7d710234