Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dddb7b6de70e391…

MALICIOUS

PDF

344.1 KB Created: 2022-03-15 12:30:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: 1e5ba24c0ea8bcf815de44e743f4c81f SHA-1: 3c87309b31a91fb4a757f653762186439eeeebf7 SHA-256: 3dddb7b6de70e391737bc40f5a6af5274a08e34a151ae32e24ad82ffb1119994
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5879

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://wirut.co.za/XSRYdR1H?utm_term=living+and+nonliving+sort+worksheet PDF link annotation
    • http://agencies.opertur.com/uploaded/kcfinder/files/senibozupojaliwaradelexa.pdfIn PDF document text
    • https://nikunjfoundation.org/ckfinder/userfiles/files/72876325146.pdfIn PDF document text
    • http://drukarnia-skawina.pl/app/webroot/media/files/jilolamabopalowesisumi.pdfIn PDF document text
    • https://pensiuneavalentina.traditionalart.ro/app/webroot/file/34233761469.pdfIn PDF document text
    • https://www.au-holding.ru/kcfinder/upload/files/watusaladuvi.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/162055ddf41fbb---gobeb.pdfIn PDF document text
    • https://vas-vill.hu/userfiles/file/21343875282.pdfIn PDF document text
    • https://daaeportrett.no/upload/file/81227304194.pdfIn PDF document text
    • http://naphotelbangkok.com/userfiles/files/vokenezogafodawuzebupa.pdfIn PDF document text
    • http://licausi.it/userfiles/files/15682673157.pdfIn PDF document text
    • https://albertsdrukwerk.nl/bestanden/files/18995494239.pdfIn PDF document text
    • http://sdsenlex.com/upload/files/32948772699.pdfIn PDF document text
    • http://hanahana.vn/media/ftp/file/3638189349.pdfIn PDF document text
    • http://www.papelerialapiceros.es/ckfinder/userfiles/files/dedeputesonutif.pdfIn PDF document text
    • https://gira-rozetki.su/kcfinder/upload/files/lixegabo.pdfIn PDF document text
    • http://dnt-mayak.ru/content/File/nisipiwajazotoleve.pdfIn PDF document text
    • http://okna-kursk.ru/page_edit/_samples/userfiles/files/xixosagosofepukifiku.pdfIn PDF document text
    • http://hammaddedunyasi.com/panel/kcfinder/upload/files/datezawatezamodikumar.pdfIn PDF document text
    • http://seosanhrd.com/userfiles/file/dovajusajudujesa.pdfIn PDF document text
    • http://www.volteram.com/kcfinder/upload/files/sumikolibatepuselob.pdfIn PDF document text
    • http://venusitos.com/kcfinder/upload/files/gufepimamixasirezukibut.pdfIn PDF document text
    • http://anaheim81.com/kcfinder/upload/files/xorofukusetiko.pdfIn PDF document text
    • https://fp-002.flexxmedien.com/flexxtrader/data/usf/file/18720676761.pdfIn PDF document text
    • http://hzkontejnery.cz/ckfinder/userfiles/files/86709426055.pdfIn PDF document text
    • http://colonia-hausmeister.de/uploads/files/3522477937.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/162204e92db1a9---4138357115.pdfIn PDF document text
    • http://kubablimel.pl/Image/files/8708401120.pdfIn PDF document text
    • http://effektfilm.de/files/file/sumozunepejajomupajodu.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/16201b5185ee6a---fiwokim.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/d6acdf5018366cbb1e4752b968e3a6d9/12886014770.pdfIn PDF document text
    • https://widepolymers.com/userfiles/file/41436204738.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/9nk044gfk4tsfmv0jk6no8m7cr/96518068451.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files/2153968837.pdfIn PDF document text
    • http://jingyitech.com/uploadfile/74089580021.pdfIn PDF document text
    • http://upasamed.org/Content/uploads/files/48542618793.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/161f883de36622---43382339758.pdfIn PDF document text
    • https://en.unecol.com/uploads/kcfinder/upload/files/9788170737.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://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_off0004eda0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EDA0 10728 bytes
SHA-256: 8a7bae37bec5c1c85bd138d72facf5dcf4915328783074ea45f044ef3334419f
font_01_sfnt_off00050614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50614 19192 bytes
SHA-256: 9c1ec1b96271c204c565ae7cdfc4c6c1ff68844b5bbf356fcedcc3fae86e13f5
font_02_sfnt_off000538bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x538BD 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9