Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8adf7624263001…

MALICIOUS

PDF

381.8 KB Created: 2022-03-27 10:34:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-08
MD5: a4fe038415ca79871fe41889b2bfe7f6 SHA-1: 3a851f7c31f5c09bc98d63494a3acb10a38b39cd SHA-256: cb8adf76242630011bb39831f7d93372004be0584ccefd010369850a7dc1e5aa
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5053

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://reparationmobile.net/userfiles/file/vumuvuk.pdf In PDF document text
    • https://portecitadelle.portecitadelle.ca/ckfinder/userfiles/files/zujufipigalawamarezuzovor.pdfIn PDF document text
    • http://constantemail.com/userfiles/file/1647877936lujejamajewoxagij.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/1623e0b81a9f9b---zugamefabox.pdfIn PDF document text
    • http://biopole-clermont.com/uploads/gestion_contenu/files/vufagave.pdfIn PDF document text
    • http://vankouwenenmastop.nl/UserFiles/file/fuvejeji.pdfIn PDF document text
    • https://tennis-samara.ru/img/file/valekufatisovodologexuge.pdfIn PDF document text
    • http://tattooindex.nl/images/uploads/72491323496.pdfIn PDF document text
    • https://produccioneswebs.com/imagenes/files/fatamipebawer.pdfIn PDF document text
    • http://xn--e1aaafipco3bk8gra3b.xn--p1ai/upload_picture/file/58907636857.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/3e9d7bd097354a7a9040f8cf6dfed170/94352210064.pdfIn PDF document text
    • http://vesimport.ru/userfiles/file/96490586241.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/0c84308e182419b5bb7540ad782b5100/mizemawifazem.pdfIn PDF document text
    • https://poojaindiangrill.com/nbloom/fckuploads/file/jatiwuf.pdfIn PDF document text
    • https://bticino-rozetki.su/kcfinder/upload/files/95503481819.pdfIn PDF document text
    • http://skvely-kup.cz/files/file/19293069057.pdfIn PDF document text
    • https://22importexport.com/eimages/file/dimunajonadidelerokiku.pdfIn PDF document text
    • https://gbp.dropship-online.com/userfiles/files/nemik.pdfIn PDF document text
    • https://ph789.com/pinhsuan/files/file/bupogerikezapu.pdfIn PDF document text
    • http://thecpg.org/kcfinder/upload/files/32100890168.pdfIn PDF document text
    • https://frischgeschluepft.de/kcfinder/upload/files/39454009976.pdfIn PDF document text
    • https://vgi-vn.vn/app/webroot/img/files/48858739701.pdfIn PDF document text
    • http://townofwinslowin.com/flash/townofwinslowin.com/file/17286246848.pdfIn PDF document text
    • http://ropesadventure.com/d/files/85956500375.pdfIn PDF document text
    • http://crystaltrade.hu/data/file/92986532651.pdfIn PDF document text
    • http://unisela.lt/files/files/texobedol.pdfIn PDF document text
    • http://8njl.com/userfiles/files/74684812172.pdfIn PDF document text
    • http://bolsadetrabajo.lasalitas.com/sites/default/files/fckeditor/file/73242731002.pdfIn PDF document text
    • https://optimuselearningschool.com/learning/site/images/uploadfiles/42439569798.pdfIn PDF document text
    • http://elcampoeco.org/FCKeditor/file/63368525760.pdfIn PDF document text
    • http://pantryscan.com/123cars/imagefck/file/kinudezi.pdfIn PDF document text
    • https://loonbedrijfschimmel.nl/userfiles/files/dawusejiguwis.pdfIn PDF document text
    • https://www.akita-tourism.com/assets/admin/plugins/kcfinder/files/33798925971.pdfIn PDF document text
    • https://gatheritup.com/js/kcfinder/upload/files/44296393057.pdfIn PDF document text
    • http://alajwakh.com/uploaded_files/userfiles/files/nutekudejulinanad.pdfIn PDF document text
    • http://cn-junsheng.com/upload/file///202232651011983.pdfIn PDF document text
    • http://mytenniscoach.net/admin/ckeditor/kcfinder/upload/files/dugit.pdfIn PDF document text
    • http://tree-house.jp/assets/news/files/kevake.pdfIn PDF document text
    • https://encoyun.com/calisma2/files/uploads/34486842648.pdfIn PDF document text
    • http://111-orte.de/testarea/cwsCMSlight/media/files/xedozaxojiwetaga.pdfIn PDF document text
    • http://bckvalumni.org/userfiles/file/givuriparokukixugekak.pdfIn PDF document text
    • https://cafij.co.za/XSRYdR1H?utm_term=hvdc+transmission+pdfPDF 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_off000582c0.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000582c0.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000582c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x582C0 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off000599e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x599E0 10660 bytes
SHA-256: 501baa41108e7a0fbaab6721a033d460e926674da515cda98ad71485c5f8b0b2
font_02_sfnt_off0005b23b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B23B 20124 bytes
SHA-256: 16e29e0cd8a9d2663bd8237e38fe4b27b12f70c88642d458c47508c0186622f2