Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af740668241072c…

MALICIOUS

PDF

255.9 KB Created: 2022-01-23 00:28:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 7575a42b63d3a30298f1f28f6130e91d SHA-1: 20c833ed380a817b275b0b75fa574ac5f84d41c4 SHA-256: 4af740668241072c3f896596cb5b86912bf5c89577eca423acf0904d043b3c54
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6949

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 http://groupkaishan.com/d/files/gadulosarazodesefowikijat.pdf In PDF document text
    • https://sandp-engineering.com/ckfinder/userfiles/files/52398915263.pdfIn PDF document text
    • https://ww150007.linebot.net/upfile/files/20211207214341.pdfIn PDF document text
    • http://elektro-galerie-hamburg.de/userfiles/file/89762296285.pdfIn PDF document text
    • https://esvigo.com/upload/files/55272732747.pdfIn PDF document text
    • http://dominant.name/userfiles/file/70669595538.pdfIn PDF document text
    • https://trade.inter-ural.ru/ckfinder/userfiles/files/gimegikipupemaxixexifivew.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/161db5e0ddbafb---75561480694.pdfIn PDF document text
    • http://worldwidestationeryholdings.com/files/file/82980648459.pdfIn PDF document text
    • https://cultureresortpokhara.com/assets/userfiles/files/26083954648.pdfIn PDF document text
    • http://itcck.org/upload/editor/file/21752340185.pdfIn PDF document text
    • http://shsuorui.com/uploadfiles/fckeditor/20220112/file/16419567976927.pdfIn PDF document text
    • http://obrienbuilders.com/userfiles/file/nufus.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/161cec49ddabe2---momumijubixo.pdfIn PDF document text
    • https://bomando.bomsolar.com/uploadfiles/files/57083591025.pdfIn PDF document text
    • http://controldellaves.com/app/webroot/arxius/file/jogamixefawederafa.pdfIn PDF document text
    • https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/529cb9999ff23c8d9daf85fd9f3968e3/50362008145.pdfIn PDF document text
    • http://www.stts-tir.com/admin/kcfinder/upload/files/lefubotirifik.pdfIn PDF document text
    • http://mtecommerce.it/public/news/file/jekemuwamekimil.pdfIn PDF document text
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1614b6ddc9231c---33991011427.pdfIn PDF document text
    • http://sgd42.ru/userfiles/file/ponarunorejewabuju.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/khon0v2e06jud1qai44u0svv30/sovusimodaxizipuwudufe.pdfIn PDF document text
    • http://sial.pl/galeria/file/patijaxozadubuzutid.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/1614e9b5b02cf3---nafisamoxadosowuwipok.pdfIn PDF document text
    • https://mannoorpally.com/uploads/file/sigasenatugeduvitor.pdfIn PDF document text
    • http://aromaonly1.com/yamituki-n/uploads/files/59844858386.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147bbd242145---76034204980.pdfIn PDF document text
    • http://www.prodomasa.com/ckfinder/userfiles/files/26781077997.pdfIn PDF document text
    • http://immodraft.de/images/architekten_agentur_images_/file/tuseruluwekovij.pdfIn PDF document text
    • https://www.colline-eternelle.com/ckfinder/userfiles/files/woxaxe.pdfIn PDF document text
    • http://geshome.co.jp/cmsdesigner/kcfinder/upload/files/xovovowavagosibilubu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/oscUj7J0Gjw/uplcv?utm_term=como+se+forma+enlace+covalente+polarPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00039071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39071 18896 bytes
SHA-256: 1ed726f114758dbb5fa792268e7b5f07b681026b8cbcf7225a1e69354d38dc39
font_01_sfnt_off0003c0eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C0EB 10648 bytes
SHA-256: e8b6dd5a242343cdf6ce0f5874d9a640c34f082faa21205952a40c0544f3c3c9
font_02_sfnt_off0003d965.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D965 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336