Malicious PDF — malware analysis report

Static analysis result for SHA-256 441662cfc32e81f0…

MALICIOUS

PDF

240.7 KB Created: 2022-03-18 00:06:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-05
MD5: a23d24f1584030c6a12dd56a719cdc2a SHA-1: 7e953a736a99c126a5f0699eaf445fb73914de55 SHA-256: 441662cfc32e81f080ebebf9c50b0028ce485e1c3e36e6d494193feb4ae67f3f
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8440

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://sunuf.co.za/XSRYdR1H?utm_term=blueprint+app+android PDF link annotation
    • http://mfahk.com/upload/files/muvaxoborebad.pdfIn PDF document text
    • http://norrlandet.se/userfiles/file/davumuxa.pdfIn PDF document text
    • https://orangevelodrometrail.fr/img/uploads/files/74342323015.pdfIn PDF document text
    • https://998.geektic.com/geektic/files/52579943619.pdfIn PDF document text
    • http://moriefrusca.com/userfiles/files/95184079782.pdfIn PDF document text
    • http://chipmax.in/chipmax/ckfinder/userfiles/files/gapifisef.pdfIn PDF document text
    • http://gkb-vityaz.ru/upload/files/47869342911.pdfIn PDF document text
    • http://tesorosdelayer.es/imgs/images/files/76529498954.pdfIn PDF document text
    • http://private-dev.cliczone.fr/upload/userfiles/files/jigigekexu.pdfIn PDF document text
    • http://perchegouet.com/ckfinder/userfiles/files/57180494119.pdfIn PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/16222c46084870---kobosozezug.pdfIn PDF document text
    • https://primer-spb.ru/files/files/27305576183.pdfIn PDF document text
    • http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16216f888d32fe---bupewanirajuvawem.pdfIn PDF document text
    • http://atad.ae/emanager/assets/ckeditor/plugins/kcfinder/upload/files/57615750140.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1621cbfd76c7bc---fitolodudidarilalavadope.pdfIn PDF document text
    • https://living-stone.lu/userfiles/files/kokifasupir.pdfIn PDF document text
    • http://tarotschule-stuttgart.de/sites/default/files/file/56302922969.pdfIn PDF document text
    • http://truhlarstvi-strakonice.cz/files/file/46301169735.pdfIn PDF document text
    • http://chiengthai.com/file_media/file_image/file/77988205088.pdfIn PDF document text
    • https://rambud.pl/uploaded/file/63234039195.pdfIn PDF document text
    • https://airsoft1.ro/files/file/91587758929.pdfIn PDF document text
    • https://masini-de-ambalat.ro/images/userfiles/7201576455.pdfIn PDF document text
    • https://www.centralleiloes.com.br/admincentral/ckeditor/kcfinder/upload/files/27167152714.pdfIn PDF document text
    • http://domingo.hu/ckfinder/userfiles/files/zabixukonogagawerira.pdfIn PDF document text
    • http://xn--80aaae7amexjfdlfdfg.xn--p1ai/files/file/rudosed.pdfIn PDF document text
    • http://nt-module.ru/ckfinder/userfiles/files/70615662653.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 extracted file (font_00_sfnt_off000353c7.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000353c7.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000353c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x353C7 10372 bytes
SHA-256: d4367464bbb0b8c41f9530d0045e43de83d38557f53b259dd3f2bb841945ca55
font_01_sfnt_off00036b48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36B48 19004 bytes
SHA-256: 3f21344a3538f9c80a8a3102c1ca1d89db03bb8d720a06f30a1a65a764d91651
font_02_sfnt_off00039d32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39D32 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9