Malicious PDF — malware analysis report

Static analysis result for SHA-256 5508c2e700dc8f94…

MALICIOUS

PDF

342.3 KB Created: 2022-03-05 13:48:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: 290e2cfb7d02665497434fc689d6dafc SHA-1: fc0a701236e01dc8201d25afacd54e8984458d58 SHA-256: 5508c2e700dc8f942cbf27489d4c3fe83dffe3a377cddf3f11b374511eafbc42
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6641

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://klcmekatronik.com/ckfinder/userfiles/files/68033233324.pdf In PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16214b2b32d64f---39090376994.pdfIn PDF document text
    • http://honeystraw.getrade.net/uploadfiles/file/wiluwokatu.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/6092416d66f311b5ce0291df009211cc/2185264394.pdfIn PDF document text
    • http://kirpichi.su/kcfinder/upload/files/nezefafifobowowasimodow.pdfIn PDF document text
    • http://anexbd.com/assets/ckeditor/kcfinder/upload/files/40491554149.pdfIn PDF document text
    • https://kristinanamaste.eu/files/74089073484.pdfIn PDF document text
    • https://natinsel.com/imagenes/file/37041962768.pdfIn PDF document text
    • http://mariamozharova.ru/uploads/files/fojonoliwovuzifudu.pdfIn PDF document text
    • http://www.rify.us/cms-uploads/files/56806382140.pdfIn PDF document text
    • http://xn----7sbbbizu2bxaod.xn--p1ai/userfiles/file/jelenujopi.pdfIn PDF document text
    • https://cnn-logistics.com/asset/files/tidivivatuzugo.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/162009ec864207---73789045321.pdfIn PDF document text
    • http://polishingmarblefloor.it/userfiles/files/87472570136.pdfIn PDF document text
    • http://deryalvincotokurtarma.com/userfiles/file/fedovikuxijagalumunutixek.pdfIn PDF document text
    • http://tse.net.in/assets/ckeditor/kcfinder/upload/files/21974911690.pdfIn PDF document text
    • http://www.etiquettes-adhesives-bobine.fr/kcfinder/upload/files/68346261981.pdfIn PDF document text
    • http://xn--djr00fsyfv0o5qgy9u.net/filespath/files/20220220101658.pdfIn PDF document text
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/2847206d05125154bd940fb2e867e554/77335025665.pdfIn PDF document text
    • http://fernandopelosini.it/userfiles/files/55152083413.pdfIn PDF document text
    • https://bravo-hk.com/userfiles/file/tufilo.pdfIn PDF document text
    • http://smm-mm.com/uploads/news_file/35079274937.pdfIn PDF document text
    • https://www.nutfruit.org/js/admin/ckeditor/plugins/kcfinder/upload/files/xukikiwozono.pdfIn PDF document text
    • https://shiokuda1.com/contents/files/89237116533.pdfIn PDF document text
    • http://fskyok.com/uploadfile/files/95803293871.pdfIn PDF document text
    • https://artistaone.co/userfiles/files/miwavivuxiluvu.pdfIn PDF document text
    • https://dm288.com/slicice/file/tevexusikis.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/hjep919fi88pi0m5c9fmg31002/vesifodeloz.pdfIn PDF document text
    • https://huaku3c.tw/uploads/files/202203021152212041.pdfIn PDF document text
    • http://muzycznescyzoryki.pl/userfiles/file/dukavet.pdfIn PDF document text
    • http://akademia-jedenastka.pl/zdjecia/fck/file/91522949952.pdfIn PDF document text
    • https://cbconsulting112.ca/userfiles/files/2531301651.pdfIn PDF document text
    • https://gmnavarra.es/ckeditor/files/jaxunulibu.pdfIn PDF document text
    • https://podar.co.za/XSRYdR1H?utm_term=evaluating+functions+graphs+worksheetPDF 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_off0004e1dc.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004e1dc.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004e1dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E1DC 19988 bytes
SHA-256: d1a24888f06ff175042639cb4dbea7128483f1c1bbdc3f580abf1c8137efe08f
font_01_sfnt_off0005167e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5167E 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00052d9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52D9E 11084 bytes
SHA-256: a2ca680b0e84b6eb89b0cb107cf19695c84fda1a9267c457ea32415b34988d7e