Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f8ac869a25c72d…

MALICIOUS

PDF

785.2 KB Created: 2022-03-11 06:57:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 5c22a1eb0861665ad15a7706a21d443a SHA-1: a29cd02acfba9582798d8a1d2a2929e87687ceab SHA-256: a4f8ac869a25c72d2b8affaa19d153997b471cd8718525abadf5d624d7effaad
144 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.2075

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://colod.co.za/XSRYdR1H?utm_term=surah+an+naba+1-+10 PDF link annotation
    • http://concienciafiscal.com/kcfinder/upload/files/nidofesomojezerevaz.pdfIn PDF document text
    • https://ourlady-schools2.com/userfiles/files/57767998959.pdfIn PDF document text
    • https://smartcirclegroup.com/userfiles/file/nikikexoworin.pdfIn PDF document text
    • http://inkjetartandimage.com/Uploads/file/98120297377.pdfIn PDF document text
    • http://professionalcsali.hu/admin/ckeditor/kcfinder/upload/files/46153988256.pdfIn PDF document text
    • http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1620fe109d87b0---zamofiki.pdfIn PDF document text
    • http://spgamepack.net/upload/files/49349351191.pdfIn PDF document text
    • https://phu-komplex.pl/pliki/file/vufuluzijo.pdfIn PDF document text
    • http://adgroup.co/userfiles/file/notatunadamakazipatu.pdfIn PDF document text
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/6bb7abd05014e196f76963c3b989661b/44543796207.pdfIn PDF document text
    • http://starysklep.itmega.pl/photo/file/gazexajerukanobekapexobu.pdfIn PDF document text
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622988a2a4b81---luguxuzowo.pdfIn PDF document text
    • https://glaskunstcentrum.nl/images/file/jovabo.pdfIn PDF document text
    • http://www.tempshift.com/app/webroot/files/uploadimagesfile/5379105490.pdfIn PDF document text
    • https://carmelocuritiba.com.br/ckfinder/userfiles/files/87208481608.pdfIn PDF document text
    • http://carneiro-sa.pnh.pt/js/ckfinder/userfiles/files/bivitamorimu.pdfIn PDF document text
    • http://banderlogclub.ru/kcfinder/upload/files/27647290635.pdfIn PDF document text
    • http://www.leinsterdancing.com/uploads/files/raxubezipatikamupo.pdfIn PDF document text
    • https://mhreng.com/userfiles/file/ropelizurawip.pdfIn PDF document text
    • https://marathonroller.com/userfiles/files/tevurexumesonujizetuli.pdfIn PDF document text
    • http://kerama.altrodesign.eu/ckfinder/userfiles/files/savin.pdfIn PDF document text
    • http://soc-in.com/data/media/files/65499079420.pdfIn PDF document text
    • https://sakata-mokuzai.com/db/item/uploads/files/jotitonatopalamasir.pdfIn PDF document text
    • http://393citizen.com/upload/files/49926401991.pdfIn PDF document text
    • http://atlantidaagency.com/kcfinder/upload/files/61162180961.pdfIn PDF document text
    • http://techmechengineers.com/uploads/kuxami.pdfIn PDF document text
    • http://www.auberdiffusion.com/ckeditor/kcfinder/upload/files/42853256393.pdfIn PDF document text
    • https://doucetplasticsurgery.com/ckfinder/userfiles/files/wizalilorefimosu.pdfIn PDF document text
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/4c5c18be833ae3b421f86f080fa60ad6/63772897565.pdfIn PDF document text
    • http://xzavod.com/kcfinder/upload/files/44628372058.pdfIn PDF document text
    • https://biurodluga.pl/files/files/dijonaxapotup.pdfIn PDF document text
    • http://petra-koparki.pl/Upload/file/bibetigepupitotojozuvituk.pdfIn PDF document text
    • http://birdwatching.sk/media/file/87220841351.pdfIn PDF document text
    • http://mskabel.cz/UserFiles/File/tazedimudegarudirijujodet.pdfIn PDF document text
    • http://plan1.ir/assets/ckeditor/kcfinder/upload/files/93487970810.pdfIn PDF document text
    • https://infoenergie-loire.org/userfiles/file/69831267158.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_off000bae32.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000bae32.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000bae32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAE32 25236 bytes
SHA-256: ff98ff415b5fcc3ae8dbbaa67e20ce78fb5c1d257061a99788e28929040528aa
font_01_sfnt_off000befbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEFBB 10072 bytes
SHA-256: e4e617bfbc0eb271b0f767de34a5a925c399f7e3fb0b39e49df87f0770ff69a4
font_02_sfnt_off000c061c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC061C 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_03_sfnt_off000c1d38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1D38 16572 bytes
SHA-256: abd5655b97a28815c1fd9d1a03c641cfe0cd3cded46207dd3777d4be4209bebd