Malicious PDF — malware analysis report

Static analysis result for SHA-256 18a4b89a0b76274f…

MALICIOUS

PDF

330.2 KB Created: 2022-02-08 02:32:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-10
MD5: f4d44a8308bbc82fa4f6c094edbd2767 SHA-1: 4e8f4d1fb6d322a5aead59b41b7f64bafc4e321d SHA-256: 18a4b89a0b76274f9f794f0cad1c7e6d5ca51e6f0c630ebe08e494619781c08a
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5879

Heuristics 5

  • 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.
  • 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=jpg+bestanden+samenvoegen+in+pdf PDF link annotation
    • http://besteva.com/upload/files/86923773815.pdfIn PDF document text
    • http://euhoca.com/js/ckfinder/userfiles/files/39434826720.pdfIn PDF document text
    • http://yishiweb.com/upfiles/files/20211201_103018.pdfIn PDF document text
    • http://bappeda-jepara.org/app/webroot/js/kcfinder/upload/files/tatevubamefuje.pdfIn PDF document text
    • http://1mosref.ru/ckfinder/userfiles/files/85352381906.pdfIn PDF document text
    • https://saksisan.com/upload/ckfinder/files/20781771748.pdfIn PDF document text
    • http://snap-drone.com/userfiles/file/35071266884.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16121786175a49---70570442270.pdfIn PDF document text
    • http://studiotecnicobergamaschi.it/userfiles/files/dixutomovinegixapabaxu.pdfIn PDF document text
    • http://mh-gartengestaltung.de/userfiles/file/tokalilisaxafumukija.pdfIn PDF document text
    • http://champagne-marc-chauvet.com/images/files/58116478962.pdfIn PDF document text
    • http://nanchang.chinatupai.com/web/js/ckfinder/userfiles/files/94972853877.pdfIn PDF document text
    • http://anshan56.cn/userfiles/file/16351389651399680831.pdfIn PDF document text
    • http://centronegozi.com/public/nigegevufizuwabazeb.pdfIn PDF document text
    • http://hun777.hu/_user/file/lolil.pdfIn PDF document text
    • http://ropesadventure.com/d/files/70860340652.pdfIn PDF document text
    • http://spy-military-labs.com/userfiles/file/garozezabomobowa.pdfIn PDF document text
    • http://maasmartcity.com/userfiles/file/57514689301.pdfIn PDF document text
    • http://careerpathrecruitment.com/swapscan/app/webroot/js/ckfinder/userfiles/files/47014701218.pdfIn PDF document text
    • http://iiiemjobs.com/FCK_Editor_Images/files/vabifelelagolorub.pdfIn PDF document text
    • https://capitolmodels.tuzonanet.net/userfiles/file/88382957190.pdfIn PDF document text
    • http://www.poliklinika-hb.cz/userfiles/file/97479267588.pdfIn PDF document text
    • http://shasenconsulting.com/assets/ckeditor/kcfinder/upload/files/74069151570.pdfIn PDF document text
    • http://xn--b1adrijbbb.xn--p1ai/upload_picture/1602101245.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1619b803ac010e---motevuwipimubowowuf.pdfIn PDF document text
    • http://boschvietnam.com/files/usersfiles/files/lanejeguzulisapudaxiluj.pdfIn PDF document text
    • http://www.galiantsolutions.com/emailimages/file/runogapuzeregezigorisoxap.pdfIn PDF document text
    • https://greengenome.in/admin/userfiles/file/depudopozuwum.pdfIn PDF document text
    • http://kleiberit.ru/files/file/mujikobodukotexi.pdfIn PDF document text
    • https://lotteppta.net/beta/assets/file/posadaf.pdfIn PDF document text
    • https://hatarozatok.martonvasar.hu/ckeditor/kcfinder/upload/files/82777997705.pdfIn PDF document text
    • http://aiaato.com/FileData/ckfinder/files/20220126_C0DC862C380D73BF.pdfIn PDF document text
    • http://noithatdangcap.vn/app/webroot/uploads/files/tupimekeviporeriwix.pdfIn PDF document text
    • http://sibmaxi.ru/userfiles/file/mibufe.pdfIn PDF document text
    • https://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16158d2accd4dc---34427832013.pdfIn PDF document text
    • https://szabobuszberles.hu/files/files/makebexavodeduguji.pdfIn PDF document text
    • http://carolstoecker.com/clients/c/c6/c60e280709801842a26e47e23f21f170/File/ragifutigeropilefekex.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_off0004bc94.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004bc94.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004bc94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BC94 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0004d3af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D3AF 17304 bytes
SHA-256: 1e741c4a572e9d39b9d57d3ff05fe71e39049649d8c19144d172a19fdabce985
font_02_sfnt_off0004ffe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FFE4 10892 bytes
SHA-256: 2fd66cd4b1cad0e62b7c3b652816d7e2b16e7d978936e5df9fc5aaedabad6430