Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e36ef30e831104c…

MALICIOUS

PDF

243.8 KB Created: 2022-03-07 06:18:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: dce0f8356d364abb86cbaef30a160e65 SHA-1: 6d7fb7fbaf990bfbe0b9d2e35e64e7e1590a46d2 SHA-256: 4e36ef30e831104caa8b6fc295cce6952e874f10059207abe086fc96ad35daaa
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7303

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=simple+pendulum+lab+report PDF link annotation
    • https://entabe.com/upload/20220219/files/wiperisetar.pdfIn PDF document text
    • http://primesystem.kz/app/webroot/js/kcfinder/upload/files/3540744645.pdfIn PDF document text
    • https://eksiliotomotiv.com/upload/ckfinder/files/80744208341.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161f9e7c22f017---tiroka.pdfIn PDF document text
    • https://nisseiplastic.com/up_images/exp/files/86768183066.pdfIn PDF document text
    • http://stonepigments.com/userfiles/file/pubakufajiba.pdfIn PDF document text
    • http://medicalproduct.hu/images/files/14081501261.pdfIn PDF document text
    • http://igs.compcierge-asia.com/ckfinder/userfiles/files/84680070395.pdfIn PDF document text
    • http://www.stts-tir.com/admin/kcfinder/upload/files/papebuj.pdfIn PDF document text
    • http://sochi-riba.ru/ckfinder/userfiles/files/vipumilulepurezezefi.pdfIn PDF document text
    • http://riasztoszolnok.hu/admin/fck_upload/file/winele.pdfIn PDF document text
    • https://apgicl.com/public/files/assets/ckeditor/kcfinder/upload/files/mosigufoxu.pdfIn PDF document text
    • https://dbmotorbrokers.com/userfiles/file/29179646397.pdfIn PDF document text
    • https://newline-eg.com/userfiles/file/kaxufaw.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16208d8a999e41---22871295076.pdfIn PDF document text
    • http://etoprosto.ru/ckfinder/userfiles/files/fupijekitatip.pdfIn PDF document text
    • http://alphasigmaoverseas.com/userfiles/file/sepakibusegusepobafupane.pdfIn PDF document text
    • http://s8radziejowice-paszkow.pl/userfiles/file/xomufum.pdfIn PDF document text
    • http://elverum-revmatiker.no/images/file/banelatetozuxijunilonob.pdfIn PDF document text
    • http://sous-mama.org/userfiles/file/rodasazowimemawimamojigav.pdfIn PDF document text
    • http://diplomat2014.ru/ckfinder/userfiles/files/8642782453.pdfIn PDF document text
    • http://www.primariasantana.ro/uploads/file/sofuvuzasu.pdfIn PDF document text
    • https://aelma.com/sites/default/userfiles/file/powenefisogafeg.pdfIn PDF document text
    • http://b-solutions.net/userfiles/file/15325628625.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621b815baf727---vudepuzumetekikaxukef.pdfIn PDF document text
    • https://asken.as/bilder/file/kogizasanaxitipopek.pdfIn PDF document text
    • http://gyn-ordi.at/myPix/file/poforijasowirobubum.pdfIn PDF document text
    • https://andrejc.si/files/file/xozasofexovana.pdfIn PDF document text
    • http://acm-medicali.it/userfiles/files/xegasawofawefe.pdfIn PDF document text
    • http://porpora.eu/imagenes/imagenes_contenidos///8701271179.pdfIn PDF document text
    • http://elmakoleji.k12.tr/public/kcfinder/upload/files/varutozami.pdfIn PDF document text
    • http://zoldjogsi.hu/uploads/files/damivadujiluf.pdfIn PDF document text
    • http://7166867.ru/ckfinder/userfiles/files/64514835831.pdfIn PDF document text
    • https://resortweeks.pro/userfiles/file/dusorugalipor.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/1621fb5c867c47---71518324021.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620ce1a4a63e4---82037628918.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00035f38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35F38 18636 bytes
SHA-256: 845f0abd8fdb2e79d99e4a4cd0a55663eaec906a4721528f67c01d1415a1916e
font_01_sfnt_off00038fe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38FE7 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003a707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A707 10700 bytes
SHA-256: 5ab885e11d7754baf9e3439493ae785f4c758af59785ba8deef96c242e9451dd