Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb86df031c6fbaeb…

MALICIOUS

PDF

368.0 KB Created: 2022-03-20 07:57:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-08
MD5: d232c57eb90566900cbf86ff868d49e4 SHA-1: efe0851acc3fdac038a66f8744925745fce38d04 SHA-256: cb86df031c6fbaeb705d9c2802c4926438221d09c1dfb9c81bafcb16b085c122
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6485

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://podar.co.za/XSRYdR1H?utm_term=change+of+address+form+dmv+ny PDF link annotation
    • https://psiakocky-potisk.cz/webpagebuilder/ckfinder/userfiles/files/momojisumobafefe.pdfIn PDF document text
    • http://pravkniga.ru/files/userfiles/files/1227822720.pdfIn PDF document text
    • http://grabnerestriche.at/62361638412.pdfIn PDF document text
    • http://slxiang.com/v15/Upload/file/2022319743549588.pdfIn PDF document text
    • http://ropesadventure.com/d/files/89944581200.pdfIn PDF document text
    • https://elitstroycraft.ru/source/file/9701134019.pdfIn PDF document text
    • http://tchid.net/userfiles/file/21267324868.pdfIn PDF document text
    • https://nissanzorba.ro/ckeditor/ckfinder/userfiles/files/47693087375.pdfIn PDF document text
    • http://sofia-es.tokyo/yamituki-n/uploads/files/9831019425.pdfIn PDF document text
    • https://huk-machine.com/userfiles/file/lisag.pdfIn PDF document text
    • http://razzledazzleevents.in/userfiles/file/22102363808.pdfIn PDF document text
    • http://hacsbathtarntaran.org/~/userfiles/file/10566037687.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/161f8ccc986807---19922052261.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621f2f7b48bb8---53437856666.pdfIn PDF document text
    • https://www.kg-designlabs.com/kcfinder/upload/files/zimodenuxirewavof.pdfIn PDF document text
    • https://yourownadviser.com/ckfinder/userfiles/files/zupadofifibuz.pdfIn PDF document text
    • http://www.cabinet-pollet-lille.fr/img/uploaded/file/95109510225.pdfIn PDF document text
    • https://peintures-descours.fr/fichier/files/kiror.pdfIn PDF document text
    • http://dogwarts.ru/sites/default/files/file/71347579396.pdfIn PDF document text
    • http://jfpol.jainfarms.com/uploads/zerepuki.pdfIn PDF document text
    • https://contabil-fiscal.ro/mm/file/ruwaxeve.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/162105df1b636e---43165354561.pdfIn PDF document text
    • https://latvanysport.hu/upload/files/63470594194.pdfIn PDF document text
    • http://kiapelhrimov.cz/UserFiles/File/59691452138.pdfIn PDF document text
    • http://akinmedikal.com/uploads/file/duzabuzejovagogejoni.pdfIn PDF document text
    • http://mannadey.in/FCKeditor/file/sejujufoperupaf.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/6f51492c80e43726c37b129347153bc3/13730822130.pdfIn PDF document text
    • http://stmrcstvm.com/userfiles/file/mikutavimew.pdfIn PDF document text
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/1622a234c26c11---68276279178.pdfIn PDF document text
    • https://milkywayads.com/webroot/img/files/gegefafupoma.pdfIn PDF document text
    • http://workcoop.org/fckeditor/userimages/file/20220309015713.pdfIn PDF document text
    • http://orsini-blasioli.it/userfiles/files/88497844998.pdfIn PDF document text
    • http://chiangmai-esc.net/user_img/files/wumalidazigufegino.pdfIn PDF document text
    • https://gamidbisha.com/userfiles/file/1032158693.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/16226614fb1775---72433403263.pdfIn PDF document text
    • http://toanlinh.vn/upload/files/26264887943.pdfIn PDF document text
    • http://zulassungsdienst4you.de/bilder/file/gisigu.pdfIn PDF document text
    • http://baodieptailor.com/uploads/2022-02-17/images/files/30972115749.pdfIn PDF document text
    • http://mlspoland.co/files/file/72935892856.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_off00054e6a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00054e6a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054e6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54E6A 10776 bytes
SHA-256: 66ae0b3404f9ea9b752a8397f4cb3c26461f7ca7c6954e627f9e1cb73e6179b2
font_01_sfnt_off000566e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x566E2 19220 bytes
SHA-256: 2bd0aac637f0c55f71710887332148352b4985489e39af18e854703f45157cbf
font_02_sfnt_off00059931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59931 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9