Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd781bf1a6ecd54c…

MALICIOUS

PDF

453.7 KB Created: 2022-03-18 21:53:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: da7d6e34efc0b8397cddc6b70ae10746 SHA-1: 7f57d4bcb143c0ecdb7d78cf403d7ba5b3c913f9 SHA-256: cd781bf1a6ecd54c3e255d126a2eacfa42c6d5e4c114559503f1cb43a6b7c4af
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4232

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://yoyep.co.za/XSRYdR1H?utm_term=systematic+review+guidelines+critical+appraisal PDF link annotation
    • http://radis-rrl.ru/userfiles/image/81374369355.pdfIn PDF document text
    • https://contact-house.com/fckeditor/upload/file/fusupuzifiligabux.pdfIn PDF document text
    • http://www.asbea.org.br/assets/plugins/kcfinder/upload/files/2281082415.pdfIn PDF document text
    • https://tannhatviet.vn/upload/files/lusatotujavivut.pdfIn PDF document text
    • http://veedik.com/assets/admin/kcfinder/upload/files/22203235316.pdfIn PDF document text
    • https://webrekruit.com/php_codes/Scott/VieauAssociates/code/userfiles/file/tewalekomavapesagokol.pdfIn PDF document text
    • https://monamifrance.com/FileData/ckfinder/files/20220313_667AF8858E3508FA.pdfIn PDF document text
    • https://latvanysport.hu/upload/files/49821295524.pdfIn PDF document text
    • https://simbotour.ro/ckfinder/userfiles/files/20939664332.pdfIn PDF document text
    • http://www.globalnautique.nl/upload/files/povuzefipikafe.pdfIn PDF document text
    • http://reklamnizbozi.cz/data/upload/files/10912365215.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/b90815fbb787a24bb60ef24b56e9d7d6/gavuxa.pdfIn PDF document text
    • http://ellenia3.eu/userfiles/files/20337176557.pdfIn PDF document text
    • https://exxel.cz/kcfinder/upload/files/xodixeleroz.pdfIn PDF document text
    • http://mentaplywood.com/images_upload/files/98513961207.pdfIn PDF document text
    • http://hz-kontejnery.cz/ckfinder/userfiles/files/lutiwasus.pdfIn PDF document text
    • https://veaodaibrahma.com/uploads/image/files/kebinupote.pdfIn PDF document text
    • https://learnrkb.jugalbandiresearch.com/ckfinder/userfiles/files/wijivafodabusexeko.pdfIn PDF document text
    • http://hammaddedunyasi.com/panel/kcfinder/upload/files/45710862897.pdfIn PDF document text
    • http://geodavidepini.it/userfiles/files/47565268374.pdfIn PDF document text
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620b1f656bb1f---89351452783.pdfIn PDF document text
    • http://conf.gorganiau.ac.ir/kcfinder/upload/files/pugagogaviwapuk.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/e98471530a5d8db56634a4be93451fbd/56144345369.pdfIn PDF document text
    • http://program-pro.ru/userfiles/files/losugikofararanovazizu.pdfIn PDF document text
    • http://sellmysayarah.com/userfiles/files/xiwuwejufuvegan.pdfIn PDF document text
    • http://xn--80aafbanafwvcftiqfecrg2a.xn--p1ai/pict/file/kigezawebefojusijizunisa.pdfIn PDF document text
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/1621caae14cc8b---91774628847.pdfIn PDF document text
    • http://lovelyspa.net/ckfinder/userfiles/files/5826362726.pdfIn PDF document text
    • http://uralcomservis.ru/crn_fls/crn_files/11283228216.pdfIn PDF document text
    • http://lafedja.cz/public/file/lunewokuxi.pdfIn PDF document text
    • https://ls-machinery.com/uploadpic/files/202202061343536390.pdfIn PDF document text
    • http://look.bio/kcfinder/upload/files/53247420825.pdfIn PDF document text
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/162155a3f99feb---lanumuxawafinisixotevof.pdfIn PDF document text
    • http://synhbio.com/upload/files/79495775697.pdfIn PDF document text
    • https://chrmglobal.com/userfiles/file/53879054716.pdfIn PDF document text
    • http://secretsocietygroup.com/temp/vinney/HTML/userfiles/file/43313833799.pdfIn PDF document text
    • https://meesens.be/KrMee/Tekstverwerker/bojebala.pdfIn PDF document text
    • http://caminodesantiagoenmoto.com/assets/ckfinder/core/connector/php/uploads/files/12646341339.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_off0006a74e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A74E 11180 bytes
SHA-256: cb4b90753908d1fe394c8df9c87212cc35119c4496dfe6da7e14ded8ee9e7383
font_01_sfnt_off0006c146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C146 17860 bytes
SHA-256: 38e336eb344df1034914e8c21c8315316e8fbc5a155758a6298687b1bac5f01a
font_02_sfnt_off0006ef62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF62 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9