Malicious PDF — malware analysis report

Static analysis result for SHA-256 4415f6f8efb32d3d…

MALICIOUS

PDF

554.9 KB Created: 2022-02-25 08:06:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-05
MD5: 393737b3d292861042e59f8638596991 SHA-1: 8fc454590c2222c739a20610f3adc4e32ba4f094 SHA-256: 4415f6f8efb32d3d97fb73605a0664e6914df610af3dcc52866763f160f75697
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4047

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://spalovnachemolak.sk/userfiles/file/samixamil.pdf In PDF document text
    • https://ecodiagnost.com/ckfinder/userfiles/files/35154775064.pdfIn PDF document text
    • http://krallarintavugu.com/upload/file/32029266801.pdfIn PDF document text
    • https://webornate.com/viking1/uploads/files/gufugexusulakot.pdfIn PDF document text
    • http://scuderieverdina.it/scuderia/userfiles/file/81755942480.pdfIn PDF document text
    • http://livelyway.com/ckfinder/userfiles/files/25147555307.pdfIn PDF document text
    • https://ankaratutuncu.com/panel/kcfinder/upload/files/74205106185.pdfIn PDF document text
    • http://eurosolar.cz/res/file/90610625679.pdfIn PDF document text
    • http://ejmk.com/ej/upload/files/sekokemak.pdfIn PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/161ae315a5c9e2---75694429574.pdfIn PDF document text
    • http://microcement.ua/userfiles/file/35262704880.pdfIn PDF document text
    • http://wellogo.in/userfiles/file///41005133488.pdfIn PDF document text
    • http://altadirezione-consulting.it/userfiles/files/60640430768.pdfIn PDF document text
    • http://www.solarwindependence.com/ckfinder/userfiles/files/denorob.pdfIn PDF document text
    • http://x-site.by/upload/editor/files/vutupewadide.pdfIn PDF document text
    • https://vico-inmobiliaria.com/ckfinder/userfiles/files/93936992274.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/4d2d29883aa2db0abe262d0230b471ee/23685410876.pdfIn PDF document text
    • http://an-ocn.ru/ckfinder/userfiles/files/68340384176.pdfIn PDF document text
    • https://www.miroku-mfg.co.jp/system/js/kcfinder/upload/files/fedanugotapinu.pdfIn PDF document text
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611d9966dd263---10114651765.pdfIn PDF document text
    • https://billionbosses.com/ckfinder/userfiles/files/makugudosurodipif.pdfIn PDF document text
    • http://yuhenganquan.com/userfiles/file/20210708120647_164661369.pdfIn PDF document text
    • http://dmhu.eu/uploads/uplib/file/60605518053.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/43647795000.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/1619fca0ac63fc---tujevosirikomu.pdfIn PDF document text
    • http://elitaliaweb.it/upload/file/rakamipiribewodeju.pdfIn PDF document text
    • https://chimrodistribution.ro/poze_diverse/file/2282890470.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16123b5ac7e51d---9896994145.pdfIn PDF document text
    • https://highfieldhousehotel.net/nbloom/fckuploads/file/gomiparofusufulogil.pdfIn PDF document text
    • http://shopphutungmayphat.com/upload/img/files/nigigigumojevelamikipipow.pdfIn PDF document text
    • http://secureyun.cn/uploadfile/file///2021112120213436.pdfIn PDF document text
    • https://bbpartner.cz/userfiles/file/vilaxivize.pdfIn PDF document text
    • https://loheb.co.za/XSRYdR1H?utm_term=excel+spreadsheet+won%27+t+print+full+pagePDF 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 extracted file (font_00_sfnt_off00083b4d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00083b4d.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00083b4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B4D 11204 bytes
SHA-256: d3785b74e7d9c2bbfa07512fdd41df152f5a0b7a317efd1e746192ae4447e561
font_01_sfnt_off00085567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85567 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00086c82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86C82 18144 bytes
SHA-256: d776020e634333be707769ac748451167a8bca54c15e7fbfc5102d7490a4c40b