Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8173fb0fb5af1d…

MALICIOUS

PDF

553.6 KB Created: 2022-02-14 03:16:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: a5cf16d61aba57661fd9c47afac5d77c SHA-1: 7925b2b40754838d87ad14eef3eeeeb598e5bd00 SHA-256: 5d8173fb0fb5af1dee0532596ba4fbb4dacaa374b978ca9dcd95d1768af9093a
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3774

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://cafij.co.za/XSRYdR1H?utm_term=watchmen+comic+alan+moore+pdf PDF link annotation
    • http://marasintl.com/public/ckfinderuploads/files/nimaserafawativi.pdfIn PDF document text
    • http://thecpg.org/kcfinder/upload/files/42747505344.pdfIn PDF document text
    • http://wsp.pl/userfiles/file/48257840335.pdfIn PDF document text
    • http://color-gateway.com/userfiles/file/gapesakisanaludadolu.pdfIn PDF document text
    • https://dalycity.com/wysiwygfiles/file/vibufovidonabo.pdfIn PDF document text
    • https://shaksheer.com/app/webroot/upload/files/84126540212.pdfIn PDF document text
    • http://beergolfers.com/blog/images/file/juwafafodevi.pdfIn PDF document text
    • https://vwb.mrv-educationservices.com/content_file/files/fesomibunalegipal.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/0d29c9d83a4ad8a6c5edb6a7a10f56d8/24485062521.pdfIn PDF document text
    • https://www.ibericaseguridad.com/admin/kcfinder/upload/files/67582177989.pdfIn PDF document text
    • http://unsersohn.ch/images/file/35339957889.pdfIn PDF document text
    • http://msamericapageant.com/clients/873634/File/72051730308.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616eafa40896f---70891729124.pdfIn PDF document text
    • http://gokea.org/upload/editor/files/62719715094.pdfIn PDF document text
    • https://przygodanaukrainie.pl/admin/ckfinder/userfiles/files/xidum.pdfIn PDF document text
    • http://teplo76.ru/uploads/file/38316241259.pdfIn PDF document text
    • http://avandcie-automation.fr/ckfinder/userfiles/files/34258136918.pdfIn PDF document text
    • https://hainutedecopii.eu/ckfinder/userfiles/files/64934520587.pdfIn PDF document text
    • http://ptsound.com/plugins/ckfinder/userfiles/files/9449622087.pdfIn PDF document text
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/p8n128305jpnolvaputgbrihl2/41209667580.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/njaaqh79vg7boq2g1eacre1nft/2300488106.pdfIn PDF document text
    • http://derivat.sk/files/todovov.pdfIn PDF document text
    • http://ingenierie-mont-blanc.fr/kcfinder/upload/files/jejidiwibuvuliz.pdfIn PDF document text
    • http://transbur.ru/admin/ckfinder/userfiles/files/jisapemesitumagolexa.pdfIn PDF document text
    • http://frutapac.es/ckfinder/userfiles/files/5499800609.pdfIn PDF document text
    • https://empresa-venta.hr/files/7037665198.pdfIn PDF document text
    • http://www.sealjet.mn/pictures/files/jifofinaruwujitazar.pdfIn PDF document text
    • http://www.sandzthabapanel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160ee7969a09b8---91492853938.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161b577b92bf47---lefuvitirirezadumu.pdfIn PDF document text
    • http://bep-a-cong-nghiep.theonejsc.com/userfiles/file/fosaduvazudut.pdfIn PDF document text
    • http://raudhatuljannah-gma.com/assets/kcfinder/upload/files/46075139601.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000832af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x832AF 20176 bytes
SHA-256: 32cad503c315b6e2ba6a0d9b5da745bd1610548af9b7ab70b15ef8899ebf6bd6
font_01_sfnt_off00086733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86733 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00087e53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87E53 10708 bytes
SHA-256: 08b9b314c2cd5e45bc4df329a9c2fd2d5d337e752431e720ff1b59250f0a08b7