Malicious PDF — malware analysis report

Static analysis result for SHA-256 4784340cdf48f988…

MALICIOUS

PDF

580.3 KB Created: 2022-02-05 10:42:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: 49becfe0685faff546e91733e4065181 SHA-1: 6b2a0ad794355f6eac948207d6f4e15b7d2d8cae SHA-256: 4784340cdf48f988594bafe5fd61a54092a39e8819cb2774f6a5b54f049a4a52
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3336

Heuristics 6

  • 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.
  • 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=application+format+in+english+for+college+principal PDF link annotation
    • http://tiendanatacion.com/noticias/files/wodonopa.pdfIn PDF document text
    • http://fotoprint.lv/downloads/file/2813155004.pdfIn PDF document text
    • http://zssadkowice.pl/pliki/baxudapikovur.pdfIn PDF document text
    • https://matagujrischool.com/admin/imagetemp1/file/11587151284.pdfIn PDF document text
    • http://centromp.it/userfiles/files/nofifojebepup.pdfIn PDF document text
    • http://qbcar.ru/ckfinder/userfiles/files/72435318384.pdfIn PDF document text
    • http://mecateengenharia.com.br/ckfinder/userfiles/files/gujunadowozu.pdfIn PDF document text
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/161805265460db---75964424853.pdfIn PDF document text
    • http://tarasovfabrika.ru/uploads/file/gudoditeri.pdfIn PDF document text
    • http://hayfidan.com/admin/kcfinder/upload/files/75411077895.pdfIn PDF document text
    • https://r4binsh4h9-att.com/contents/files/jifokatorewowor.pdfIn PDF document text
    • https://megacook.pt/site/upload/file/85387625473.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/aaeebdbd9fe0c2eeeee418fac0139647/66888031905.pdfIn PDF document text
    • https://khonggiansangtao.com/platformecom/img/upload/file/jetijalefeti.pdfIn PDF document text
    • http://www.insight-assessment.com/ckfinder/userfiles/files/57534311456.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ed744f93a1b---rataxil.pdfIn PDF document text
    • https://actorconseil.com/files/file/45816936157.pdfIn PDF document text
    • http://howardtatelaw.com/UserFiles/File/datosaledoba.pdfIn PDF document text
    • http://maymaygiaydachidang.com/upload/files/68592196420.pdfIn PDF document text
    • http://khiensa.com/UserFiles/File/kusadaximujegigedi.pdfIn PDF document text
    • http://immobilieninvestors.eu/userfiles/file/43930516690.pdfIn PDF document text
    • http://sportsbettingconsultants.net/cote_dor_import/admin/ckfinder/userfiles/files/28438697888.pdfIn PDF document text
    • http://denda.co.kr/ckfinder/userfiles/files/sijivaxivupokur.pdfIn PDF document text
    • https://unecol.com/uploads/kcfinder/upload/files/ponezemabiridirebajokete.pdfIn PDF document text
    • https://www.piramideidiomas.com/ckfinder/userfiles/files/zanibojomej.pdfIn PDF document text
    • http://keralabiblesociety.com/fck_uploads/file/devisagedewipulev.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/mdibju293q7jm8du6jo8dmu175/ruvusinemeladi.pdfIn PDF document text
    • http://www.logistiekverbeteren.nl/ckfinder/userfiles/files/texowusajika.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/161c638c48fd4b---87504241585.pdfIn PDF document text
    • http://cuspsurgeons.com/userfiles/file/39509708833.pdfIn PDF document text
    • http://goforthegreengolfpools.com/userfiles/file/zusoxomowajile.pdfIn PDF document text
    • https://shinko-tw.com/UserFiles/file/garurofifudeb.pdfIn PDF document text
    • http://chiangmaicharmingtravel.com/ckfinder/userfiles/files/pekojugakuxinejewebuw.pdfIn PDF document text
    • http://gustosandvic.com/ckfinder/userfiles/files/binejuz.pdfIn PDF document text
    • https://ahha.az/userfiles/file/30904380879.pdfIn PDF document text
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616beb1b1a1b0---35821509776.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161f7098854d04---69372616202.pdfIn PDF document text
    • https://bedandbreakfastholten.nl/userfiles/file/62700791664.pdfIn PDF document text
    • http://unitez.net/images/newtech/files/vomad.pdfIn PDF document text
    • http://www.barczyk.plwww.sgpm.krakow.pl/aanewsysn/kcfinder/upload/files/4310411349.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_off0008a5d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A5D8 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0008bcf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BCF8 10908 bytes
SHA-256: f20d43ea49ede08a6e54a81fe1ff8f1c8ce6b1aa4a54ee68036a5b3db49b907e
font_02_sfnt_off0008d613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D613 16376 bytes
SHA-256: 7470a2e05af2aa9dbb1f220dbef48299f32c714eb10d0ab9449b40bcb59256c1

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