Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d8cffa562f0ff9…

MALICIOUS

PDF

435.6 KB Created: 2022-03-09 12:58:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 1c5ae17d931cfbb9f56d19ac446582e9 SHA-1: 5692be36561b344303d011928a0a9138d36a0b2d SHA-256: c5d8cffa562f0ff976102b02b38b580a8aeb8cfa75c3d57b1e6d6c3e2b412001
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4050

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://ragaz.co.za/XSRYdR1H?utm_term=hardiebacker+installation+guide PDF link annotation
    • http://ajarnveerapong.com/UserFiles/file/dobevarodumorimerowokaba.pdfIn PDF document text
    • https://biholka.cz/uploades/userfiles/file/mirekadipuge.pdfIn PDF document text
    • http://hoangduy.vn/vn/files/68271759311.pdfIn PDF document text
    • https://glycocalyx.nl/userfiles/image/file/39639612019.pdfIn PDF document text
    • http://wittsend.com/userfiles/file/tisude.pdfIn PDF document text
    • https://minhjazzvietnam.com/kcfinder/upload/files/pogidapupi.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/c10ce2aed283029e8e2f81cc0fd7d06f/bovuroniletixoniwi.pdfIn PDF document text
    • http://securite.paqt.fr/images/file/gajurukesujefadobazudejid.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fa54fcd1b04---23224320679.pdfIn PDF document text
    • http://glassinter.de/kcfinder/upload/upload/19679514023.pdfIn PDF document text
    • http://iba.education/kcfinder/upload/files/61956800572.pdfIn PDF document text
    • http://bajcsidavidfoto.com/_user/file/pafofuputejadumite.pdfIn PDF document text
    • https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/k5d22bg14c3chets2fs4bcoe28/vokomegefufofazedirukutub.pdfIn PDF document text
    • http://nemdanangpho.com/uploads/2022-02-25/images/files/folivut.pdfIn PDF document text
    • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/d0a939d76b0298f4b7f2dfbcd03bddb9/jugobowapofukotodu.pdfIn PDF document text
    • http://fourfoods.com/images/files/16663059844.pdfIn PDF document text
    • http://shinies.ru/img/lib/file/matuzapiwakosijegebe.pdfIn PDF document text
    • http://studiozammuner.eu/userfiles/files/bisenoxerekekinezodede.pdfIn PDF document text
    • https://laure-guermonprez.fr/userfiles/file/xedosi.pdfIn PDF document text
    • http://etecpresidentevenceslau.com.br/kcfinder/upload/files/30608989648.pdfIn PDF document text
    • http://divorceinhungary.hu/kcfinder/upload/files/54638687189.pdfIn PDF document text
    • http://huefpdf.org/upload/file/1984844974.pdfIn PDF document text
    • http://audyt.rowerowaszkola.pl/imgturysta/files/20222078246.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/f6d64d128272662f3b260dc07404fd2a/14790843277.pdfIn PDF document text
    • https://residencialconilcosta.es/kcfinder/upload/images/files/xidelawaw.pdfIn PDF document text
    • https://bibonatura.hu/ckfinder/userfiles/files/77033446121.pdfIn PDF document text
    • https://hkhhvac.com/nbloom/fckuploads/file/26415309982.pdfIn PDF document text
    • http://bangiyaparishadtoronto.ca/bpt/editor/uploadfiles/danuzowo.pdfIn PDF document text
    • https://cottonweb.net/userfiles/file/xijit.pdfIn PDF document text
    • https://10kshot.com/customerinterview/ckfinder/userfiles/files/tabudegasadevizowarab.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621e976e550eb---89007253339.pdfIn PDF document text
    • http://undergroundspitters.nl/kcfinder/upload/files/19524555093.pdfIn PDF document text
    • https://securitydm.net/slicice/file/vupejalolufarise.pdfIn PDF document text
    • http://pollibox.com/assets/uploads/files/zibadutegituxis.pdfIn PDF document text
    • http://robertfeinberglaw.com/images/edit_images/file/dasisetifagapaj.pdfIn PDF document text
    • https://ljlconst.com/admin/images/file/sukoxaribazizopazefa.pdfIn PDF document text
    • http://customartdirect.com/kcfinder/upload/files/wefer.pdfIn PDF document text
    • http://amirafouad.com/uploaded_files/file/4088132293.pdfIn PDF document text
    • http://contextuae.com/resimler/files/tixikumuxerazinenuf.pdfIn PDF document text
    • https://sharedsynergy.com/userfiles/file/85274975845.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00065ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65FF5 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00067710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67710 17620 bytes
SHA-256: d4cf8c9f2d04d79410dc0729ba20dccd47751426d94c129fe486eaf8e6cc51db
font_02_sfnt_off0006a512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A512 10868 bytes
SHA-256: a40cf9bca586e81972413da11fafd00fa0e6f922bed1f369471fe6279c46a357