Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8bdd97469d3bcb8…

MALICIOUS

PDF

320.0 KB Created: 2022-03-30 07:14:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: 5fd93f4ae51dd04dc4b3501ae8cecd62 SHA-1: 905d1764cdad778f0f303f945c27499bf449f152 SHA-256: a8bdd97469d3bcb8cc9cb4912448da3ab2e73b27194b7f0b6e4f60faed5cce7c
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6303

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=geraldine+galvan+desnuda PDF link annotation
    • http://zkbz888.com/uploadfile/file///2022030418325255.pdfIn PDF document text
    • http://polipack.ru/content/file/lumave.pdfIn PDF document text
    • http://dinapart.net/frontend/web/kcfinder/upload/files/1377711500.pdfIn PDF document text
    • http://dopuskvsro.ru/UserFiles/14742634734.pdfIn PDF document text
    • http://myphamlulanjina.com/upload/files/51392404487.pdfIn PDF document text
    • http://wixoon.hu/upload/file/tosiz.pdfIn PDF document text
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/b98e73e72e55a0895d1b7d65a4c4d2d8/wetuwemulewakorugeki.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/k3ok35466vpqd03sbhmbrpokot/jobawazevuvokajizejobe.pdfIn PDF document text
    • https://timecraftz.com/userfiles/file/zotobobip.pdfIn PDF document text
    • http://henri-ruch.ch/doc_pub/file/62474420504.pdfIn PDF document text
    • https://indiansecuritisation.com/ckfinder/userfiles/files/33597563560.pdfIn PDF document text
    • http://sanjosechakan.com/lib/kcfinder/upload/files/bulafa.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/c536cac8340a78b74a9522f56942bc91/kuvalenaselowogalemonoke.pdfIn PDF document text
    • https://planbmedia.hu/files/xowibelokif.pdfIn PDF document text
    • https://hse.tw/upload/file/76903247472.pdfIn PDF document text
    • https://ingatlanfelugyelet.hu/uploads/file/86128698003.pdfIn PDF document text
    • http://candleelectricals.com/uploaded_files/userfiles/files/19213658366.pdfIn PDF document text
    • https://luiginoiobbi.com/userfiles/file/gujowujodare.pdfIn PDF document text
    • https://www.ozkozel.sk/kcfinder/upload/files/15695067077.pdfIn PDF document text
    • http://everestsherpatravel.com/demo/public/ckeditor/kcfinder/upload/files/73065047766.pdfIn PDF document text
    • https://jgranit.pl/userfiles/file/56769921714.pdfIn PDF document text
    • http://bjyhyy.cn/filespath/files/20220318104649.pdfIn PDF document text
    • http://umpn.pnl.ac.id/asset/kcfinder/upload/files/wapakifilunixigaxigudu.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/5c86f7cf97ae48c4eb693d29a57fc090/63728117503.pdfIn PDF document text
    • http://ociretailcomputersciences.com/file_space/files/tuzepinaxobuj.pdfIn PDF document text
    • https://bergepkolcsonzo.hu/userfiles/file/80514453349.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16218a7a3c530a---weluxulowuzeboka.pdfIn PDF document text
    • http://ipea.kr/userData/board/file/gulatodenamazajokuporased.pdfIn PDF document text
    • http://areopag-group.ru/sites/default/files/uploads/rumet.pdfIn PDF document text
    • http://natur-pet.cz/webpagebuilder/ckfinder/userfiles/files/17739581069.pdfIn PDF document text
    • https://kaemsp.org/upload/editor/file/32540495269.pdfIn PDF document text
    • https://ph2020.org/FCKeditor/file/tuxutamiloximobewu.pdfIn PDF document text
    • http://terwaarde.be/ckfinder/userfiles/files/39090496910.pdfIn PDF document text
    • http://profil-metall.de/content/uploads/file/gufaxekadiba.pdfIn PDF document text
    • http://callbells.com.ua/kcfinder/upload/files/degiridobu.pdfIn PDF document text
    • http://bnrware.com/uploadfile/fckeditor/file/76037434156.pdfIn PDF document text
    • http://grupomagister.com.br/kcfinder/upload/files/90309869707.pdfIn PDF document text
    • http://hotelpenza58.ru/ckfinder/userfiles/files/57027862511.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_off00048e2b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00048e2b.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00048e2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48E2B 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0004a546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A546 19672 bytes
SHA-256: 636893a1ef0a416872a9f528acbf7ede1b50086230b5ba8d177daee8280b1b6d
font_02_sfnt_off0004d888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D888 10412 bytes
SHA-256: c7c3208e6c307b38b8b942e8aa4a7b83d5479b771bd7c6335e06737fcc134504