Malicious PDF — malware analysis report

Static analysis result for SHA-256 4783313e3cf41809…

MALICIOUS

PDF

303.9 KB Created: 2022-01-30 19:37:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: efd878492082007c19b09de1ff285b3c SHA-1: d99d9cf166e2abe78226a8e7a5686bbadcadf01c SHA-256: 4783313e3cf418096c5baed66887ee4cc7b118d7513570ac92f8b845f8ffbc64
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7721

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://yubit.co.za/XSRYdR1H?utm_term=analog+multimeter+working+principle+pdf PDF link annotation
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/8f17ee517019ef4e34ce0fb30314cf7b/sowiseku.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161539b22f34af---nozalezorugubolepizob.pdfIn PDF document text
    • https://thietkeweblongan.com/upload/files/61112544294.pdfIn PDF document text
    • http://tenis-klubmoj.si/uporabnik/file/nasuzodowuzukufotuge.pdfIn PDF document text
    • http://wsp.pl/userfiles/file/garidini.pdfIn PDF document text
    • http://aibasavar.edu.bd/app/webroot/ckfinder/userfiles/files/72321940250.pdfIn PDF document text
    • https://homeuu.biz/upload/ckeditor/pages/files/vowol.pdfIn PDF document text
    • https://cardion.dk/gfx/fckimages/file/gixalavetijivadituzo.pdfIn PDF document text
    • http://kondicionery-lubertsy.ru/upload_picture/file/regiza.pdfIn PDF document text
    • https://gloriamus.org/Uploads/userfiles/files/27015610009.pdfIn PDF document text
    • https://kolkataangikar.org/ckfinder/userfiles/files/88239850937.pdfIn PDF document text
    • http://xn----dtbsgbucafmmaf.xn--p1ai/servimages/editor/files/lutexixo.pdfIn PDF document text
    • https://burragebrothers.com/demo/jolie/beta/userfiles/files/83150440645.pdfIn PDF document text
    • http://shanghaicruiseparty.com/uploads/file/wukusexa.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1619fad1a118da---luwuwugubukuxefuw.pdfIn PDF document text
    • https://pakistanchristiancongress.org/userfiles/file/tapafo.pdfIn PDF document text
    • http://enkepharma.com/upload/files/mewudavedafeve.pdfIn PDF document text
    • http://stadion-zarya.ru/ckfinder/userfiles/files/7687141044.pdfIn PDF document text
    • https://www.quartzlock.com/userfiles/files/44963110839.pdfIn PDF document text
    • https://volgogradexpo.ru/ckfinder/userfiles/files/ferokinepan.pdfIn PDF document text
    • http://zzquansu.cn/d/files/dolixikaromunejedupis.pdfIn PDF document text
    • http://lavender-farm.ro/app/webroot/js/kcfinder/upload/files/ranuzotudawevaxudix.pdfIn PDF document text
    • http://twinmd.ru/userfiles/file/41683454897.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/161b89340db8ce---57838376306.pdfIn PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1615d1f93d2898---10868939994.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.netReferenced by PDF JavaScript
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseReferenced by PDF JavaScript

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000454a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x454A6 11056 bytes
SHA-256: f80c28e6627dbb7639a82dc8a38fedcd91f2efff6a93c4e2334ef9b575ada7e5
font_01_sfnt_off00046e41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46E41 16744 bytes
SHA-256: 518650a5efa8bea508a16efce91c4b032dd907f35973075213c8d385a02b3cab
font_02_sfnt_off000499ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x499EC 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336