Malicious PDF — malware analysis report

Static analysis result for SHA-256 441cf2ab3a34943b…

MALICIOUS

PDF

488.9 KB Created: 2022-03-21 15:56:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-05
MD5: d4f844b56fd347659764042c97710824 SHA-1: 1b083bdd56145489a1d346193ebfd2951f80de58 SHA-256: 441cf2ab3a34943b604c966568bb325143932d7196bab388e9e00afec370e25d
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5627

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://coreaad.com/DreamDataUpload/file/92455339064.pdf In PDF document text
    • https://niboparis.com/upload/fckeditor/files/87285543101.pdfIn PDF document text
    • http://suitianhose.com/uploadfile/files/logubijakofojix.pdfIn PDF document text
    • http://lorichphoto.com/pictures/file/65186086388.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622a98512908f---libugiropowa.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/3ca801d23d42415201e603996bcc4824/jasipuriwetudekog.pdfIn PDF document text
    • http://www.senioradviserab.se/admin/kcfinder/upload/files/jisirutageloxatepoxof.pdfIn PDF document text
    • https://transturist.transturist.com/ckeditor/ckfinder/files/files/11399843762.pdfIn PDF document text
    • http://intertravel.hu/_user/file/16418852063.pdfIn PDF document text
    • https://vectronic.tech/admin/ckeditor/kcfinder/upload/files/xegoruxuma.pdfIn PDF document text
    • https://www.willmarshelter.com/ckfinder/userfiles/files/25836852572.pdfIn PDF document text
    • http://databaze.glaukom.cz/upload/files/16860614155.pdfIn PDF document text
    • http://jtg-antracyt.pl/files/file/fepesivovekire.pdfIn PDF document text
    • https://lazdynumokykla.lt/userfiles/file/dasoxitagatal.pdfIn PDF document text
    • http://bcf-plv.com/kcfinder/upload/files/37963533524.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/fccb6bedef5cddb1c600eb3dad5a1aff/leborubapozisuxepumod.pdfIn PDF document text
    • http://www.ppspr.org.br/ckeditor/kcfinder/upload/files/javon.pdfIn PDF document text
    • http://polenes.cl/userfiles/file/45246889204.pdfIn PDF document text
    • https://beyondmywalls.com/data/files/kazusolalegew.pdfIn PDF document text
    • http://sur-mesure.kesslord.fr/upload/file/92396033188.pdfIn PDF document text
    • http://membre3.trajetplus.fr/userDocs/file/pimetaputefotexepazapesib.pdfIn PDF document text
    • http://bartuceviri.com/userfiles/file/tebupedotafama.pdfIn PDF document text
    • http://xn--4k0b43gkwo4gn.com/upload/editor/file/46511301424.pdfIn PDF document text
    • http://www.introspekta.si/ckfinder/ckeditor_uploaded_files/files/fijebaw.pdfIn PDF document text
    • http://terrigena.cz/data/pic/files/50881205338.pdfIn PDF document text
    • https://yubit.co.za/XSRYdR1H?utm_term=11+rasgos+del+perfil+de+egreso+de+primariaPDF 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_off0007343a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0007343a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0007343a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7343A 10592 bytes
SHA-256: 570a14ec64b8d61e2e6177ce8527c4006f2b89d85a3c9a6637472dc035b4ee40
font_01_sfnt_off00074c29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C29 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00076344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76344 18584 bytes
SHA-256: 54ccee9d02a9f0286ace6604bdfa669c5c629081cb0847c54eae47579f2a2dd5