Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddc18fbf3f8bf3e…

MALICIOUS

PDF

279.6 KB Created: 2022-01-06 09:22:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: 758f694aafc228f136e09122542c60c3 SHA-1: 208c39bd1ccc8337f09e21d792efbe6e07ef58d8 SHA-256: 3ddc18fbf3f8bf3ee9d6648b95d9ccc5f10dbcb47026e69a440ea07af204d462
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7754

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 http://benthanhsgfarm.net/images/uploads/files/47546947339.pdf In PDF document text
    • http://shrlie.com/upload_fck/file/2021-11-4/20211104121512893775.pdfIn PDF document text
    • http://syntra.pl/userfiles/file/13951893253.pdfIn PDF document text
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/3c3218d20ce82341ddbffe19c544944f/vidotudaz.pdfIn PDF document text
    • https://infotechb2blite.com/bot/ckfinder/uf/files/48695607936.pdfIn PDF document text
    • http://chukguwang.com/files/fckeditor/file/69201039175.pdfIn PDF document text
    • http://tbm-mova.by/images_from_html_editor/file/tumugudilidesene.pdfIn PDF document text
    • https://fenixfalt.com/userfiles/file/65037388895.pdfIn PDF document text
    • http://ordineveterinarivenezia.eu/userfiles/files/jiviweritinazosam.pdfIn PDF document text
    • http://peaceinsrilanka.lk/userfiles/file/15843375783.pdfIn PDF document text
    • http://s8radziejowice-paszkow.pl/userfiles/file/pupazemotam.pdfIn PDF document text
    • https://sua.vn/uploads/userfiles/file/21864870016.pdfIn PDF document text
    • https://leifs-auto.dk/images/file/37058560893.pdfIn PDF document text
    • http://mms.vru.ac.th/kcfinder/upload_new/files/mitetej.pdfIn PDF document text
    • http://usairsprings.com/userfiles/file/37736491365.pdfIn PDF document text
    • http://dblbtech.com/userfiles/file/redol.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/a5ksmoemvapd66jrabbf20rp8v/malivufuti.pdfIn PDF document text
    • http://china-zub.ru/userfiles/file/mibibin.pdfIn PDF document text
    • http://minerva-collection.net/files/files/31478740371.pdfIn PDF document text
    • https://www.tcf.gov.tr/ckfinder/userfiles/files/pibunal.pdfIn PDF document text
    • http://jingmingtai.com/filespath/files/20210908121538.pdfIn PDF document text
    • http://seatraderhk.com/userfiles/salimororuvajo.pdfIn PDF document text
    • http://www.eurogalvano.com.br/admin/kcfinder/upload/files/Cabos_Progalvano.pdfIn PDF document text
    • https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/aec56555866ecb60c260cc6af1e967c5/92520071966.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/vItLtdF7Pec/uplcv?utm_term=malformaciones+cong%C3%A9nitas+en+embarazos+m%C3%BAltiplesPDF 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 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_off0003ee57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3EE57 11284 bytes
SHA-256: 84dc26a399299d4d8a91aaa6b1ecf3409ee72c81642c31cd7fe5c17ae7ccb292
font_01_sfnt_off00040863.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40863 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00041f02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41F02 18120 bytes
SHA-256: eb1e5b5f7632cc4fcd78043896d724f0599df9a1ff21a3b72274a11253714b03