Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed303a23f77193c6…

MALICIOUS

PDF

227.9 KB Created: 2022-03-11 10:18:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-07
MD5: 75af7d2581e2cec76fda8298d1521297 SHA-1: 27417a334e6a7a35eed5ed9dcc1c4ead55f563b5 SHA-256: ed303a23f77193c63b2da21d1048080f45b5fccf9adfd81336007cfb313ffca1
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7618

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 http://basyapiemlak.com/yukleme_klasoru/userfiles/file/waburupa.pdf In PDF document text
    • http://synergienetwork.net/userfiles/file/81318687263.pdfIn PDF document text
    • http://dentish.ru/ckfinder/userfiles/files/gepubovafif.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/23e37b612ae73afb6c7d60651d7905db/fapuxidifus.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1621af5aa4f42c---lifuraj.pdfIn PDF document text
    • https://www.bosingels.nl/ckfinder/userfiles/files/sizagofafebonajaxitunu.pdfIn PDF document text
    • http://lev-steklo.ru/userfiles/file/33286530765.pdfIn PDF document text
    • https://www.houseofwax.cz/kcfinder/upload/files/gowarodupisas.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16211dce38f2c0---naval.pdfIn PDF document text
    • https://etadelloro.it/images/file/soluxa.pdfIn PDF document text
    • http://eksan-ltd.com/userfiles/file/nunoge.pdfIn PDF document text
    • https://latework.cz/soubory/boxazekikozoxelejugowijej.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/1622abc6536846---kudiditoxan.pdfIn PDF document text
    • https://fsreloading.com/userfiles/files/64143619415.pdfIn PDF document text
    • http://upakuika.com/img/file/78559961734.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/1621febeeb2848---kenoni.pdfIn PDF document text
    • http://thegioituigiay.net/uploads/files/zaxigaderen.pdfIn PDF document text
    • http://sankoux.jactokai.net/kcfinder/upload/files/63969763413.pdfIn PDF document text
    • http://apismorava.eu/docs/wifizivirapifan.pdfIn PDF document text
    • https://camping-du-lac-dijon.com/userfiles/fichiers/boxux.pdfIn PDF document text
    • http://workontext.ru/media/file/9294615140.pdfIn PDF document text
    • https://highrise.pl/file/15557448952.pdfIn PDF document text
    • https://umiyawoodworks.com/fckdb/userfiles/file/wapoxafem.pdfIn PDF document text
    • http://afgesproken.nl/kcfinder/upload/files/68020724314.pdfIn PDF document text
    • https://supportsurgical.com.br/assets/kcfinder/upload/files/53580746141.pdfIn PDF document text
    • https://www.veskom-slovakia.sk/gfx/administration/js/ckeditor/kcfinder/upload/files/26366362683.pdfIn PDF document text
    • https://wirut.co.za/XSRYdR1H?utm_term=blumberg+forms+store+nycPDF link annotation
    • http://fbrasil.com/userfiles/file///bujuwobujanezap.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_off00031f35.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00031f35.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00031f35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F35 10832 bytes
SHA-256: 154d98ec5810aea235169b74e7baf76c65ea7259a0e7f3aa1e504dbcfef935e3
font_01_sfnt_off00033847.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33847 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00034f62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34F62 18312 bytes
SHA-256: 75a70ac3c7aaae1e778723d42b0f294ebbb6f6015e827d7b602fea7927909a09