Malicious PDF — malware analysis report

Static analysis result for SHA-256 4def68fe6b5e03e6…

MALICIOUS

PDF

260.2 KB Created: 2022-03-18 23:20:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-30
MD5: 2f0304319c787d0dea774286c48b1856 SHA-1: ecbb464794a6363e8408fbd9b0166af019e83d08 SHA-256: 4def68fe6b5e03e6b39bedb8c8a130d44ce425c89ee5cf65398f9d2b75d30ceb
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6619

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://schneider-rozetki.ru/kcfinder/upload/files/25452941696.pdf In PDF document text
    • http://hifitness.hu/userfiles/file/jodugimir.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/1620c6b99146e7---7917409446.pdfIn PDF document text
    • https://avenue102.com/uploads/file/fufupufixufako.pdfIn PDF document text
    • http://jamalcar.com/userfiles/file/61615009597.pdfIn PDF document text
    • http://king-tableware.com/uploads/files/202203140350276007.pdfIn PDF document text
    • http://masterref.ru/editorfiles/file/70739388786.pdfIn PDF document text
    • http://motocams.cz/ckfinder/userfiles/files/moriwonarumuvemuwolon.pdfIn PDF document text
    • http://lam.kiev.ua/kcfinder/upload/files/69439337534.pdfIn PDF document text
    • https://llibreriaha.com/img/events/file/sumodoxu.pdfIn PDF document text
    • https://edusfera.pl/upload/file/37142545335.pdfIn PDF document text
    • http://lambanghieuquangcaogiare.net/vietkiendo/upload/file/bopoworepusutumebupiteg.pdfIn PDF document text
    • http://www.snhram.ru/kcfinder/upload/files/76755455306.pdfIn PDF document text
    • http://jj-metals.com/userfiles/file/2022021415304973499.pdfIn PDF document text
    • http://dekoblickfang.de/userfiles/file/rijizukazovojitasarizidu.pdfIn PDF document text
    • https://thedigitalsystems.com/userfiles/file/73832616950.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/161ffd97a624d1---zafogidisulakuwopin.pdfIn PDF document text
    • http://hig-hegmann.de/userfiles/file/bozamujanigalate.pdfIn PDF document text
    • http://bioengenharia.com.br/public/libs/kcfinder/upload/files/52297512333.pdfIn PDF document text
    • https://diamond-marketing.cz/soubory/vanawekobivataraxajoto.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/162248c5cc58be---zonokebukixexopafow.pdfIn PDF document text
    • http://www.snhram.ru/kcfinder/upload/files/berisegasux.pdfIn PDF document text
    • http://kirpichi.su/kcfinder/upload/files/30169348040.pdfIn PDF document text
    • https://texmet.pl/userimages/file/12583438649.pdfIn PDF document text
    • http://lixupeng.com/uploads/files/xesojubuvipodajukobiko.pdfIn PDF document text
    • http://daiichigroup.net/uploads/news_file/majowutupefugabixaraz.pdfIn PDF document text
    • http://protech-t.hu/kcfinder/upload/files/45840383579.pdfIn PDF document text
    • https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/2mqudhofh223tscm61ibu9u5h4/18716514110.pdfIn PDF document text
    • http://5e10.com/file/kekudedewakakobisexofoxo.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16207824c8c23d---jonekesazanijalozamud.pdfIn PDF document text
    • http://ei-windykacja.pl/upload/file/norekobidisavuje.pdfIn PDF document text
    • http://www.ascondir.com.br/Gerenciador/kcfinder/upload/files/65748419980.pdfIn PDF document text
    • http://sro52.ru/uploads/files/kutitemopepusibonukejuja.pdfIn PDF document text
    • https://lazav.co.za/XSRYdR1H?utm_term=simple+calculator+program+in+android+using+eclipsePDF 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_off00038fa3.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00038fa3.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00038fa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38FA3 19936 bytes
SHA-256: 9735bd7940127b39515d53641d02739f02f32d7ea76e2f62f97fcb44cf31ed47
font_01_sfnt_off0003c4c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C4C4 11032 bytes
SHA-256: 6c5d16fb55c77fbd29b3a6d966e2d92937f7373edb4422f838c34f93a8819d79
font_02_sfnt_off0003de29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DE29 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_03_sfnt_off0003f53f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F53F 2680 bytes
SHA-256: 66f36bc1c3f194c565937e981f5c2ad0ddaff7be4ffd922da330c1b3b53cbb28