Malicious PDF — malware analysis report

Static analysis result for SHA-256 4458b7d54b7e9efe…

MALICIOUS

PDF

298.2 KB Created: 2022-03-07 07:34:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-07
MD5: ef622d0f53504504a6cc0d4390f6aab4 SHA-1: 8c7fa9be732c67da8d878c7019badc312c6b28a1 SHA-256: 4458b7d54b7e9efe4610a4e8e6535febbaf43d5ecdd6081bc0bc4af5e04ab226
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6572

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://wirut.co.za/XSRYdR1H?utm_term=can+you+see+bed+bugs+on+sheets PDF link annotation
    • http://carzip.biz/files/uploads/files/12048954719.pdfIn PDF document text
    • https://tortugafilms.ca/adminfiles/file/40114509174.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files/vasivifaduge.pdfIn PDF document text
    • http://architecturalconcept.be/kcfinder/upload/files/pekimemepiwanovoxebuviw.pdfIn PDF document text
    • http://gktizein.gr/kcfinder/upload/files/31767011105.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/162241790aa2ad---3495530594.pdfIn PDF document text
    • https://htkvn.vn/public/admin/plugins/kcfinder/upload/files/xujakixaw.pdfIn PDF document text
    • http://gradn.ru/uploades/fckeditorfile/soniwi.pdfIn PDF document text
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16217471b79b4b---57791898469.pdfIn PDF document text
    • http://hockjoohin.com/admin/uploads/file/xezutabetutanelosatugowu.pdfIn PDF document text
    • http://johnmarzillier.com/ckfinder/userfiles/files/tededexe.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/8c86e02865c0020b298169ebaa32d430/23715896880.pdfIn PDF document text
    • https://unecol.com/uploads/kcfinder/upload/files/dudetu.pdfIn PDF document text
    • https://prolinenergy.com/Admin/plugins/ckeditor/kcfinder/upload/files/86954767475.pdfIn PDF document text
    • https://www.verimevzabavu.cz/ckfinder/userfiles/files/kajuvunutejuninunanufoke.pdfIn PDF document text
    • http://kaiyudachem.com/filespath/files/20220213144843.pdfIn PDF document text
    • http://yachtales.net/admin/userfiles/files/19572558870.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16214420e369b7---28363127149.pdfIn PDF document text
    • http://www.jatekkalmesevel.hu/admin/ckeditor/kcfinder/upload/files/10136039859.pdfIn PDF document text
    • http://paillasse.hu/userfiles/file/fopafobulibujugivubuxov.pdfIn PDF document text
    • https://jechrina.gr/FCKeditor/userimages/file/mefotazozigoxusiruxovito.pdfIn PDF document text
    • http://muratdizayn.com/panel/kcfinder/upload/files/68703740714.pdfIn PDF document text
    • http://resortvillairene.it/userfiles/files/15665075307.pdfIn PDF document text
    • http://sanruou.com/app/webroot/uploads/files/45223516829.pdfIn PDF document text
    • https://agefrance.thpservices.com/documentos/file/folajuzosa.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620043ced7006---54750118704.pdfIn PDF document text
    • https://bticino-rozetki.su/kcfinder/upload/files/vojowazigigaxemosit.pdfIn PDF document text
    • http://cungcapbaoduongcuanhatban.com/upload/files/28948732725.pdfIn PDF document text
    • http://www.korsun.ic.ck.ua/js/kcfinder/upload/files/78677944445.pdfIn PDF document text
    • https://atasuorganiktarim.com/upload/ckfinder/files/90906692034.pdfIn PDF document text
    • http://schneider-glossa.ru/kcfinder/upload/files/91103925456.pdfIn PDF document text
    • https://literie-depot.fr/UserFiles/file/dapewazapebonaziwin.pdfIn PDF document text
    • http://tplustech.com/images/ckeditor/files/sodiliwonomi.pdfIn PDF document text
    • http://seto.cz/uploads/90450127957.pdfIn PDF document text
    • http://montoaneli.com/ckfinder/files/zawuputomufikitela.pdfIn PDF document text
    • https://charterboatdeliverance.com/uploads/files/53255546887.pdfIn PDF document text
    • http://creacionesfullpack.com/kcfinder/upload/files/7183078825.pdfIn PDF document text
    • https://ontech.vn/images/ckeditor/files/83782566438.pdfIn PDF document text
    • http://gkb-vityaz.ru/upload/files/86794636770.pdfIn PDF document text
    • https://pokereshop.cz/data/file/rutejobuzafepat.pdfIn PDF document text
    • http://anshan56.cn/userfiles/file/16449658521225926291.pdfIn PDF document text
    • http://sz-frp.com/pic/20220206125438583.pdfIn PDF document text
    • http://rivebistro.net/ckfinder/userfiles/files/52390584027.pdfIn PDF document text
    • http://harmony-stone.info/js/kcfinder/upload/files/23635350742.pdfIn PDF document text
    • http://xn--49s538bo8ux8c.net/userfiles/file/23518915876.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_off000437d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x437D6 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00044ef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44EF1 18756 bytes
SHA-256: 5236e13830c22a7022e4114df63c88e6c5a54608c9415cfc835c3e2fe8370522
font_02_sfnt_off00048086.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48086 10672 bytes
SHA-256: 681cd3cdc34980392d9ca0a954f8fd7aed5ffe4ec35922b98aebc1927b74cdda