Malicious PDF — malware analysis report

Static analysis result for SHA-256 478dbdea261c2df8…

MALICIOUS

PDF

263.0 KB Created: 2021-12-21 09:10:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: 9dc4693296840dbd55fc635790293a88 SHA-1: 56884485043e93adaef514e7fa4291820a85d4a7 SHA-256: 478dbdea261c2df8a6666df4b9c008f9116d02c097dbd1ffe5628a79e002cb1e
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8006

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 https://cructi.ru/uplcv?utm_term=backtrack+5+r3++64+bit PDF link annotation
    • http://homokkepek.hu/editor_up/41371152255.pdfIn PDF document text
    • https://chemainus.gocascadia.com/images/cms/file/12338871488.pdfIn PDF document text
    • http://escuelasfutbol8.com/docs/files/99901784386.pdfIn PDF document text
    • http://domario.ru/userfiles/file/85567860266.pdfIn PDF document text
    • http://hzkontejnery.cz/ckfinder/userfiles/files/kuferizoba.pdfIn PDF document text
    • http://argyleliquidations.com/userfiles/files/78886739037.pdfIn PDF document text
    • https://relans-nn.ru/images/docs/file/ziruvufasugimaduravi.pdfIn PDF document text
    • http://woodwork.pl/ubezpiecz/obrazy/file/14513196739.pdfIn PDF document text
    • https://espiber.misitioexpress.com/images/uploadedimages/file/8724266011.pdfIn PDF document text
    • http://erainbowrealty.com/userfiles/file/kuzilagamitiradipukeses.pdfIn PDF document text
    • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616bb5567160d---suwidegexosazonulexa.pdfIn PDF document text
    • http://levant-tekstil.com/other_files/File/70139237264.pdfIn PDF document text
    • http://osteriadelcampanile.com/userfiles/files/26015852628.pdfIn PDF document text
    • https://pet-fashion.ro/mm/file/34188386132.pdfIn PDF document text
    • https://www.singaporemedicalclinic.com/ckfinder/userfiles/files/tirasevesiwu.pdfIn PDF document text
    • https://agefrance.thpservices.com/documentos/file/49456363041.pdfIn PDF document text
    • http://cuahuyhoang.com/media/ftp/file/rugegevizasetugepuvoxonup.pdfIn PDF document text
    • https://fetogram.com/images/upload/files/31640906766.pdfIn PDF document text
    • http://forepic.com/_UploadFile/Images/file/dofiwidoweduloxekemubin.pdfIn PDF document text
    • https://epagneuls-bretons.fr/caningest/images/file/kazenapizufu.pdfIn PDF document text
    • http://designpavelzapletal.cz/files/file/rojotijimujo.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614d0a181e910---gepuz.pdfIn PDF document text
    • http://www.pacautomarketing.com/file/3473197846.pdfIn PDF document text
    • http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/934f3d8f6b212af4726b84c3bcf316a6/25518889400.pdfIn PDF document text
    • http://gorsilawfirm.com/userfiles/file/pitujego.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_off0003b332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B332 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0003c9d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C9D1 16776 bytes
SHA-256: cd17f390d7e32fd89a9e62036cae57ef7141e19fc3a9ffcd10333dd9318a869c
font_02_sfnt_off0003f5aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F5AA 10492 bytes
SHA-256: 99714219c1511c452bf3deb9cf00c5cd80f78b1831d236b8bc109ce9ceabba5b