Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b9ac358f132df7…

MALICIOUS

PDF

282.2 KB Created: 2022-03-05 07:52:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: 65d264434d585b434197346a9bb69699 SHA-1: dca6a0df009a44e6ebaa1c8018f52b7aebe55c23 SHA-256: 88b9ac358f132df720f79dae7add4fe5850b8a16af529b22b4f20c4c7ed6685f
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7171

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://dioss.eu/files/ckfiles/file/gawogokiri.pdf In PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1620da9d308cb5---lutekab.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/56bcced0044d7a93cb27a20372cdd692/xuxitotirunijidur.pdfIn PDF document text
    • http://lousart.com.br/ckeditor/kcfinder/upload/files/disutubidenu.pdfIn PDF document text
    • http://montpellier-businessplan.com/mbp/upload/images/images/upload/ckfinder/mixej.pdfIn PDF document text
    • http://solentpodiatry.com/jackvl940/web/content/images_uploaded/file/74803768039.pdfIn PDF document text
    • http://www.pvvc.cz/files/rosepemapemug.pdfIn PDF document text
    • https://hamzakocakoglu.com/userfiles/file/kabiwuvuruxopozo.pdfIn PDF document text
    • http://nishikizushi.com/js/kcfinder/upload/files/79845088447.pdfIn PDF document text
    • https://pensiuneavalentina.ro/app/webroot/file/kumatezoroluw.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fa0f4d93252---lilunojunigi.pdfIn PDF document text
    • http://back2wood.de/userfiles/file/nomina.pdfIn PDF document text
    • http://huthamcauquanggiap.com/upload/files/xilirigetigefi.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/ee0647c4d4ccc1b29086054c32e7d485/lekusolimita.pdfIn PDF document text
    • http://raffaelecavazzoni.com/userfiles/files/71862169123.pdfIn PDF document text
    • http://duepassidalcentro.it/userfiles/files/wikokarulonuzolufilatusuj.pdfIn PDF document text
    • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/bc31532c8ef59dc0db3ef3ddb28e3c4a/29230194991.pdfIn PDF document text
    • http://another-partner.morefriendship.com/upload/files/mamojovefepur.pdfIn PDF document text
    • http://pro-roubenky.cz/UserFiles/File/zaparovodaweletuko.pdfIn PDF document text
    • http://bartuceviri.com/userfiles/file/62847341457.pdfIn PDF document text
    • http://www.fairvalesecondary.co.za/kcfinder/upload/files/37704544901.pdfIn PDF document text
    • https://sanvexe.vn/webroot/img/files/merixarilome.pdfIn PDF document text
    • http://asbufestival.com/uploads/FCK_files/file/61144989888.pdfIn PDF document text
    • https://gangwontaxi.com/FileData/ckfinder/files/20220303_E29A2743514BED57.pdfIn PDF document text
    • http://mikailang.com/userfiles/file/20220208104806_1646991607.pdfIn PDF document text
    • http://travelweeklearningcenter.com/app/webroot/upload/files/67744253506.pdfIn PDF document text
    • http://bezpiecznamlodosc.org/files/file/bogunifunonizix.pdfIn PDF document text
    • https://familienbilstrup.dk/userfiles/file/sufawoloriralezemi.pdfIn PDF document text
    • http://client.diffuse.info/files/serumasovujamuf.pdfIn PDF document text
    • http://kochamsushi.pl/UserFiles/file/94735101450.pdfIn PDF document text
    • https://vrm.vn/kcfinder/upload/files/92004067353.pdfIn PDF document text
    • http://spostojow.pl/userfiles/file/lamib.pdfIn PDF document text
    • http://p-jtech.com/userData/board/file/98778108094.pdfIn PDF document text
    • https://directorvincentchow.com/fck_filemanager_upload/file/6171371553.pdfIn PDF document text
    • http://iseveranscopy.com/upload/editor/file/vagunapepurujal.pdfIn PDF document text
    • https://wirut.co.za/XSRYdR1H?utm_term=granado+espada+stat+points+guidePDF link annotation
    • http://www.horakgolf.cz/ckfinder/userfiles/files/tuluvizifisopeletijajaxu.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_off0003fbbc.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003fbbc.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003fbbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3FBBC 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off000412d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x412D7 17376 bytes
SHA-256: dfab8bf7a65059d7d8f62a3998b62b8316292fa7457a0855ff9a02a2ccff967c
font_02_sfnt_off0004404b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4404B 10660 bytes
SHA-256: 19e56f07399bacae711b1006439e86cdf3a600c87b52538111fc068d580dae21