Malicious PDF — malware analysis report

Static analysis result for SHA-256 634f55861c535f6c…

MALICIOUS

PDF

425.2 KB Created: 2022-03-08 07:14:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-29
MD5: 417b19e28f494679b9c65e033bca1f92 SHA-1: 8f908d7ad148ca970b8ec7fdd3cce27eb98f9929 SHA-256: 634f55861c535f6cfca6e899b88846a2aa8f99ce48c736987615fa986f43f1d9
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4362

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://jmcoverseaspvtltd.com/uploads/files/36200013867.pdf In PDF document text
    • http://nordicwalkingturak.hu/_user/file/waduxig.pdfIn PDF document text
    • http://cppzone.ru/users/blogs/file/bexomofipabepude.pdfIn PDF document text
    • https://jagamimpi.com/contents/files/pazesobewusexiti.pdfIn PDF document text
    • http://pyhunlian.com/uploadfile/file/linare.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f94587a7e05---banasijemonabag.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/162157195eb562---30370251185.pdfIn PDF document text
    • http://zge-led.com/luodan/images/userfiles/file/7340737118.pdfIn PDF document text
    • http://uslugiinzynierskie.com/eurostyl/photos/file/lenivono.pdfIn PDF document text
    • https://812423.qqtogeljackpot2.com/contents/files/gejufawatonuzob.pdfIn PDF document text
    • https://tajeer.co/userfiles/file/60130362291.pdfIn PDF document text
    • http://bantinnhadat.com/users/files/pebupajano.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620ccfa1b78ac---babifamuvederuxibeleje.pdfIn PDF document text
    • http://riverside.tw/user_upload/files/pamuvelavenafetenenov.pdfIn PDF document text
    • http://www.golfusa.be/userfiles/files/39240141630.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/2531457920.pdfIn PDF document text
    • https://insetclean.com.br/kcfinder/upload/files/rorufukasaserewabuvaf.pdfIn PDF document text
    • http://spreewaldpension-luebben.de/meineBilderAlbertGrundschule/file/wipodadinetaxujur.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621a16e7961fc---65772958226.pdfIn PDF document text
    • http://finara-v.com/file_media/file_image/file/bajaxotofuvexab.pdfIn PDF document text
    • https://chorland-dining.com/webroot/editor-uploads/files/guxas.pdfIn PDF document text
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/4130f5a5697208ea565e6f528cb5adee/mifipav.pdfIn PDF document text
    • http://nitexprofi.cz/userfiles/file/78539728275.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/cef156d4d7655ef789d668bfec701aec/27090191470.pdfIn PDF document text
    • https://sarvodayasamaj.uk/upload/files/69100267385.pdfIn PDF document text
    • http://mwflower.com/upimagesfile///bixom.pdfIn PDF document text
    • http://kiiga.ru/userfiles/file/xogivufawamikaba.pdfIn PDF document text
    • https://klcconsulting.eu/klc/file/nikolojosirevonawudagar.pdfIn PDF document text
    • https://unityofmyanmar.org/images/files/79641584266.pdfIn PDF document text
    • http://king-tableware.com/uploads/files/202202011855389809.pdfIn PDF document text
    • http://meguro.pl/www/js/kcfinder/upload/files/41143572637.pdfIn PDF document text
    • https://www.cifphosteleriayturismo.es/ckfinder/userfiles/files/39292376233.pdfIn PDF document text
    • http://www.wiseyoga.nl/kcfinder/upload/files/filidapurogabuviwaviwalo.pdfIn PDF document text
    • http://www.abitacolointerni.it/newsletter/file/25483444434.pdfIn PDF document text
    • http://eikenhorstgroep.nl/userfiles/file/3262758746.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/16223128233754---40904137512.pdfIn PDF document text
    • https://cafij.co.za/XSRYdR1H?utm_term=texas+partnership+agreement+formPDF link annotation
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620eee85a3145---8930165266.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_off00063099.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00063099.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00063099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63099 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off000647b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x647B4 19252 bytes
SHA-256: c6e40d7f869182c85f4b0cdf99082ffd0c6c41e0865e563a0c2419c6db0d8a74
font_02_sfnt_off00067a53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67A53 10824 bytes
SHA-256: 661a3eaf579f335c7257d5deaa20aa58dce5f68a390b40850f8c20312635c74d