Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dedaf98e257f9de…

MALICIOUS

PDF

391.5 KB Created: 2022-03-17 00:28:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-29
MD5: 1ae51fbd4b3c837e18761d9677989a4f SHA-1: 10258d303ebe8ddb3b25a2bc6315995ffe169e47 SHA-256: 4dedaf98e257f9deaf378ce35a3c6203446c07feda53b0f1e60331c7ab15d832
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6037

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=factors+and+multiples+worksheet+pdf PDF link annotation
    • http://dobrejaja.com/Upload/file/82244913591.pdfIn PDF document text
    • http://jr.ac.th/ckfinder/userfiles/files/nakefulazosasalefima.pdfIn PDF document text
    • http://protech-t.hu/kcfinder/upload/files/91476929152.pdfIn PDF document text
    • http://rymwid-training.com/userfiles/file/zusopivizuxiwexafo.pdfIn PDF document text
    • http://amanetauto.eu/kcfinder/upload/files/13926655683.pdfIn PDF document text
    • https://vinatech.com/userfiles/file/fekoduligorodiporuguvo.pdfIn PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/162199dee15502---34556007134.pdfIn PDF document text
    • http://geshome.co.jp/cmsdesigner/kcfinder/upload/files/xosasur.pdfIn PDF document text
    • https://inicio.camaragranada.org/administracion/kcfinder/upload/files/17603765746.pdfIn PDF document text
    • http://petgears.com/app/webroot/files/file/momosuletujadope.pdfIn PDF document text
    • http://dnepropress.net/files/file/ruxeridiwubuja.pdfIn PDF document text
    • http://kapsalonvogue.nl/files/file/fawatufokadareziku.pdfIn PDF document text
    • https://arerp.kr/data/file///pinowemalasesurefebifida.pdfIn PDF document text
    • http://zuche0551.com/upload/file/mipesedalewezet.pdfIn PDF document text
    • https://eyescare.vn/app/webroot/upload/ckfinder/files/39005063891.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620555c7ec1d3---darumawemodinosogekig.pdfIn PDF document text
    • http://happyland-nsk.net/ckfinder/userfiles/files/83694250793.pdfIn PDF document text
    • https://fonixkoncert.hu/upload/file/jukaruvadi.pdfIn PDF document text
    • https://testgit.begurholidays.com/uploads/userfiles/files/67020851352.pdfIn PDF document text
    • http://etiquettes-adhesives-bobine.fr/kcfinder/upload/files/72654018669.pdfIn PDF document text
    • http://installmysolar.com/userfiles/file/66938414201.pdfIn PDF document text
    • https://vas-muszakibolt.hu/userfiles/file/momuvefowuvezibag.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/f4ea9e129ce177428a7d76456adabcd0/rimiwiwaravikatej.pdfIn PDF document text
    • https://hyper.vessty.com/_img/files/87704812679.pdfIn PDF document text
    • http://acmemask.com/upfiles/editor/files/67483371274.pdfIn PDF document text
    • http://www.tiendadelbordado.com/ckfinder/userfiles/files/zilodofobexojivuwadijove.pdfIn PDF document text
    • http://rovitek.com/userfiles/file/80680108204.pdfIn PDF document text
    • http://gjbbang.com/userData/board/file/vekubizop.pdfIn PDF document text
    • http://yaqeen-eg.com/userfiles/file/66167543845.pdfIn PDF document text
    • http://9275522-travel.com/userfiles/file/99562004435.pdfIn PDF document text
    • http://senkardeslerkereste.com/kcfinder/upload/files/jakasojem.pdfIn PDF document text
    • http://kprmk.pl/userfiles/file/wepajitewejelutuxazipa.pdfIn PDF document text
    • https://piphoto.tw/uploads/files/202203011857059114.pdfIn PDF document text
    • https://wiercenie-studni24.pl/files/files/94390409463.pdfIn PDF document text
    • http://anexbd.com/assets/ckeditor/kcfinder/upload/files/gegibelo.pdfIn PDF document text
    • http://tsg-edinstvo.ru/userfiles/file/28771343078.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 extracted file (font_00_sfnt_off0005ac97.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005ac97.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005ac97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AC97 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0005c3b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C3B2 18432 bytes
SHA-256: 95869b14abf9c2128430670408e2a7ea2d06b640f7dbb6914410eb4c4c185bcf
font_02_sfnt_off0005f407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F407 11140 bytes
SHA-256: b447b681b5d2d3c784c63c1f206c468c4528f3c2ff134c2830ee7d09025208a1