Malicious PDF — malware analysis report

Static analysis result for SHA-256 445478d0e1e17a01…

MALICIOUS

PDF

393.9 KB Created: 2022-02-03 06:59:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 26c12dbb1fffef1f97bc7cd9b8f1a49a SHA-1: 7c36e96b7c142f7b3a722805edb9fc76bda27a06 SHA-256: 445478d0e1e17a010cc81d42a2c5c69b5be8c5bab913c0713ef2e679d3b47fe6
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains embedded JavaScript and links to external URLs, indicating it is likely a phishing lure or a downloader for a second-stage payload. The heuristic 'PDF_SEO_UTM_REDIRECTOR_LINK' suggests the primary purpose is to redirect users to malicious content, potentially for phishing or malware distribution. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5702

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=dinosaur+skeleton+template+ks1 PDF link annotation
    • https://lexcyberia.com/userfiles/files/68025222116.pdfIn PDF document text
    • http://giaydantuongphongngudep.com/images/news/file/27542524577.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/039f7863d637763a41cc3bf68e679e2d/88624628690.pdfIn PDF document text
    • http://nextlab-semi.com/files/fckeditor/file/darabaxez.pdfIn PDF document text
    • http://site.abanorte.com.br/js/ckeditor/kcfinder/upload/files/25130933577.pdfIn PDF document text
    • http://praguetransfer.com/files/file/47874239474.pdfIn PDF document text
    • http://mdsalon.ru/img/lib/file/69967770905.pdfIn PDF document text
    • https://searchlink.org/userfiles//file/fopuwufinogokatibuzube.pdfIn PDF document text
    • http://caratow.be/userfiles/file/225671101.pdfIn PDF document text
    • http://boq.internet-match.com/upload/files/ripigolajelosifufepada.pdfIn PDF document text
    • http://www.louervendreaumaroc.com/kcfinder/upload/files/gejilif.pdfIn PDF document text
    • https://vanrun-it.nl/userfiles/files/xaxowaloranabekoruniwesev.pdfIn PDF document text
    • http://kroonzuivel.nl/ckfinder/userfiles/files/86737275824.pdfIn PDF document text
    • http://vector-food.pl/userfiles/file/11928287467.pdfIn PDF document text
    • http://www.tokyomagic.jp/images/library/File/kopimivomufotev.pdfIn PDF document text
    • http://assessmentinsight.com/ckfinder/userfiles/files/8608858505.pdfIn PDF document text
    • http://seatraderhk.com/userfiles/16422704759.pdfIn PDF document text
    • http://sobinco.cz/ckfinder/userfiles/files/binixisezovim.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161ef13149d480---gulefume.pdfIn PDF document text
    • http://tksvolga.ru/userfiles/file/zarinuzubu.pdfIn PDF document text
    • https://iohrp.org/f_files/files/36433643313.pdfIn PDF document text
    • https://wrd13.com/force/file/44325371372.pdfIn PDF document text
    • http://ukkies.be/userfiles/file/ralibiwatatupunun.pdfIn PDF document text
    • https://arad.hu/files/files/xepujorilidujurejesafat.pdfIn PDF document text
    • https://talaa-obour.net/webmisr/uploadwebmisr/file/roxuxajexanusiviji.pdfIn PDF document text
    • http://www.aqua-systems.com.tw/ckeditor/kcfinder/upload/files/bilobavowipelivu.pdfIn PDF document text
    • https://aspirans.snoskainfo.ru/files/file/18337677304.pdfIn PDF document text
    • https://adm.ativo.com/js/kcfinder/upload/files/50110062660.pdfIn PDF document text
    • https://alansglobalservices.com/ckfinder/userfiles/files/pexifabuzogufe.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fded85bb297---wopinitopavorodovamo.pdfIn PDF document text
    • http://bet-balance.com/userfiles/file/povodefoxolalo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005887f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5887F 17420 bytes
SHA-256: 8a037f596f19edd0b077a84b00c24ed25c1f55c67f7bd5f426ec8e81af6caea8
font_01_sfnt_off0005b5c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B5C7 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0005ccde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CCDE 16388 bytes
SHA-256: 420fc355c9a1d8f82c9ced594d095472a3fcfbe751a999d5de6c129e601b97d6
font_03_sfnt_off0005ff93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF93 10656 bytes
SHA-256: b84c9c9662e0478204fa530df7af109bb637fab0f66c10d5ed67c4461f644c63