Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a1543bfb78ccd88…

MALICIOUS

PDF

345.1 KB Created: 2022-03-19 17:09:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-31
MD5: 6a643e259df055dee279451d9d51e109 SHA-1: abe5d13f3ec10fdd318007e7be6a0d78b741a2da SHA-256: 5a1543bfb78ccd880f26322f94fe8c048c0e52a913ea6525baa204ac0919d651
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6817

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://sunuf.co.za/XSRYdR1H?utm_term=catechesi+tradendae+pdf PDF link annotation
    • https://www.ibericaseguridad.com/admin/kcfinder/upload/files/90970763683.pdfIn PDF document text
    • http://ekhoron21.mn/uploads/files/75855910936.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f9944ec6272---kofalivuwuxisalenutobugux.pdfIn PDF document text
    • http://www.superprzygoda.pl/galeria/files/sutapobitudaxur.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fbdc2febe0d---30384463766.pdfIn PDF document text
    • https://cecprint.com/images/file/17669845495.pdfIn PDF document text
    • http://alotercuman.com/ckfinder/userfiles/files/depirivez.pdfIn PDF document text
    • https://gulfb2b.com/userfiles/file/sazofokunifopevodekot.pdfIn PDF document text
    • https://nitm.ac.in/nitmeghalaya/ckfinder/userfiles/files/wagom.pdfIn PDF document text
    • http://photomoments.ru/userfiles/files/91786267896.pdfIn PDF document text
    • http://raovat.coi.vn/uploads/userfiles/file/napifegefujowazinaxukij.pdfIn PDF document text
    • http://kuzfarm.ru/images/file/muviwareromujadesupa.pdfIn PDF document text
    • http://greenhere.cn/upload/ckimg/files/202202011731207067.pdfIn PDF document text
    • https://ccvt.vinaonegroup.net/upload/files/fuderojidijawid.pdfIn PDF document text
    • http://holflorstudio1.cz/upload/files/97318593113.pdfIn PDF document text
    • http://journalstudiesanthropology.ro/adm/jsq/kcfinder/upload/files/rurado.pdfIn PDF document text
    • https://remini.hu/userfiles/file/25495354010.pdfIn PDF document text
    • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/7c084d85c336fa85d1c214088369f3f7/fasozisolajifuk.pdfIn PDF document text
    • http://artc-polymers.com/upload/images/files/vatamupaxipu.pdfIn PDF document text
    • http://cmoxgermany.com/upimages/file/37268905877.pdfIn PDF document text
    • http://watthaistuttgart.de/userfiles/file/57195219262.pdfIn PDF document text
    • http://arquivolta.net/files/47003758788.pdfIn PDF document text
    • http://eng.sut.ac.th/tce/2016/administrator/ckfinder/userfiles/files/gelon.pdfIn PDF document text
    • http://hometextiles-consultant.com/ckfinder/userfiles/files/natusanepogowagenowewovud.pdfIn PDF document text
    • http://blackswaninfotech.com/kcfinder/upload/files/84882326861.pdfIn PDF document text
    • https://fsreloading.com/userfiles/files/zegoliderutonusa.pdfIn PDF document text
    • http://31kouqiang.com/userfiles/file/1647396020.pdfIn PDF document text
    • http://na-bytecek.cz/UserFiles/File/94515354093.pdfIn PDF document text
    • http://krakowska98.com/zdjecia/fck/file/34531926450.pdfIn PDF document text
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/bb71924353c2bb444255112c00146bdd/rudetezan.pdfIn PDF document text
    • https://vietnamwelder.vn/uploads/news_file/78269192967.pdfIn PDF document text
    • https://educationindiajournal.org/ckfinder/userfiles/files/31778274104.pdfIn PDF document text
    • http://sun-marche.com/app/webroot/js/ckfinder/userfiles/files/57154886170.pdfIn PDF document text
    • http://karinameal.com/imgdish/files/82299967590.pdfIn PDF document text
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16224d932617b9---kozumamasivalekosesizuwi.pdfIn PDF document text
    • http://wskinbody.com/data/boardData/files/gazur.pdfIn PDF document text
    • http://security-m.jp/tool/images/file/46277470074.pdfIn PDF document text
    • http://konberdbio.com/upload/files/mozapupafaw.pdfIn PDF document text
    • https://chauphongasia.com/wp-content/plugins/super-forms/uploads/php/files/ps99ej36v4jc91jh3n6j0pmrla/64308116730.pdfIn PDF document text
    • http://panova-art.com/files/file/mukidujavozupanorewoxo.pdfIn PDF document text
    • http://affichage-comevents.fr/kcfinder/upload/files/70308012508.pdfIn PDF document text
    • http://erainbowrealty.com/userfiles/file/501706021.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/162165978f2db2---giwiwekavoruj.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
    +2 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004f7f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F7F9 10580 bytes
SHA-256: 4598097dab2b860f92244c1be99aa1c56ce8a4d241ea51df0e3b403d642cb6a7
font_01_sfnt_off00051010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51010 17536 bytes
SHA-256: 01be359d66f6ba27af4f3551388fdb64510b2e7d28523a7249714d140d1e393f
font_02_sfnt_off00053d3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53D3B 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9