Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5db72fe63cfb48a…

MALICIOUS

PDF

465.9 KB Created: 2022-01-22 17:07:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 34027314edddc0c47a3d65339a952bb6 SHA-1: 14080c69b22eaecdacb447dd6d6b276914457b5d SHA-256: c5db72fe63cfb48a09f2cf6f16452e56fb73f3c2f0fc8ced77d693d795b9080a
152 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4712

Heuristics 8

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://euronet.stonavka.cz/webpagebuilder/ckfinder/userfiles/files/14743825910.pdf In PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/161db7b3085cfb---76654896738.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/a72d133f730fd80f747faa7bce5fbc3e/62624308631.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/1def8fac9ca94160964c1d21143c5c9d/pekusogurotakevuvevodogam.pdfIn PDF document text
    • https://sportsht.com/userfiles/file/75792188163.pdfIn PDF document text
    • http://apsara.ru/userfiles/file/37246237888.pdfIn PDF document text
    • https://crfgo.org.br/painel/geral/sistema/php/kcfinder/upload/files/81622246585.pdfIn PDF document text
    • http://lixupeng.com/uploads/files/75707503966.pdfIn PDF document text
    • http://cafolgd.gov.bd/assets/ckeditor/kcfinder/upload/files/26660885386.pdfIn PDF document text
    • http://campfirewtx.org/userfiles/file/fubamiwedigu.pdfIn PDF document text
    • http://www.andreapondika.cz/file/medaponi.pdfIn PDF document text
    • http://hueide.com/upload/files/didin.pdfIn PDF document text
    • http://n3ss.ro/ckfinder/userfiles/files/71735744990.pdfIn PDF document text
    • https://kueapem.com/contents/files/71608386591.pdfIn PDF document text
    • https://kingyao.com/uploadfiles/files/20211030_025655_2356.pdfIn PDF document text
    • https://nisahanpin.com/calisma2/files/uploads/29446562294.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/m1r30t5p4da8po9u4d3upndo1b/pizuzejadejerul.pdfIn PDF document text
    • http://stowarzyszeniemalyksiaze.eu/img/upload/files/rexedobabunijexifuju.pdfIn PDF document text
    • http://firsttimehomebuyerstudy.com/images/file/fafegojeworafegudineju.pdfIn PDF document text
    • http://airzo.net/userData/board/file/tisaratemolosajeril.pdfIn PDF document text
    • https://briljant-maleri.se/UserFiles/files/32350864026.pdfIn PDF document text
    • http://ahnil.com/userData/board/file/47623930934.pdfIn PDF document text
    • http://chetaomaynganhnhua.com/uploads/files/sobol.pdfIn PDF document text
    • https://mehreganimaging.com/images/upload/files/tulusi.pdfIn PDF document text
    • http://muabannhagiare.net/images/uploads/files/42141628842.pdfIn PDF document text
    • https://communicationscharlevoix.com/admin/kcfinder/upload/files/67184102671.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/37a7905e5b6d85a00a647065700e937e/4385499054.pdfIn PDF document text
    • https://liad-alger.fr/admin/style/js/edit/kcfinder/..%5Cimages%5Ccontenue/files/64535031565.pdfIn PDF document text
    • https://vestol.bg/files/file/16462341419.pdfIn PDF document text
    • http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bcee4548d9---36171013785.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/u-9XGpgKpwY/uplcv?utm_term=icai+exam+date+sheet+may+19PDF link annotation
    • 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_off0006d8a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8A8 10652 bytes
SHA-256: effc42f33ad75c9e1aaddf38047637d70a39b853f17bdf59493a57a6430a2df7
font_01_sfnt_off0006f133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F133 18460 bytes
SHA-256: 630a89a13d61e23e136f427c229d5a6efdf913e21c7047c7bb583299371df29c
font_02_sfnt_off000721bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x721BB 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336