Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c63f43ffc9281ab…

MALICIOUS

PDF

580.4 KB Created: 2022-03-05 20:18:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-06
MD5: de86cff6bb3c7121f50daeddaeeff78d SHA-1: 59a174e309d0f62c5ae6393b0ab76ecc9fe34495 SHA-256: 6c63f43ffc9281abb6e8b5aa94164226330f947cfb52abff0a27c6a0e03ec69e
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4655

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://wirut.co.za/XSRYdR1H?utm_term=wedding+collage+template+design+psd PDF link annotation
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/uk2euflfv6fi9tsu6sohtpu8pk/notubemiteruruwozesuk.pdfIn PDF document text
    • http://rovitek.com/userfiles/file/97522475992.pdfIn PDF document text
    • https://www.dooleysnaturalgas.com/ckfinder/userfiles/files/78806737165.pdfIn PDF document text
    • https://gionggiacam.gagiongvitgiong.com/ckfinder/userfiles/files/39410368030.pdfIn PDF document text
    • http://j1ent.com/userfiles/file/20220212180606.pdfIn PDF document text
    • http://meruzhankhachatryan.com/app/webroot/files/file/66565815841.pdfIn PDF document text
    • https://postelezmasivu-praha.cz/ckfinder/userfiles/files/masemafulokuxeligoxozaw.pdfIn PDF document text
    • http://geomanteia.com/userfiles/files/jidasididoronen.pdfIn PDF document text
    • https://gujaratisamajparis.org/upload/files/xujizifuluzij.pdfIn PDF document text
    • http://www.wiseyoga.nl/kcfinder/upload/files/36945951078.pdfIn PDF document text
    • http://eros-arena-reutlingen.de/eros/userfiles/file/87995357148.pdfIn PDF document text
    • http://www.dagmarsvendova.cz/admin/js/ckfinder/userfiles/files/83848069087.pdfIn PDF document text
    • http://jnnycc.org/userfiles/file/49848702735.pdfIn PDF document text
    • http://ambiance-cinema.fr/wp-content/plugins/super-forms/uploads/php/files/71cf0ee634e024510266e193e6df982c/kunopuro.pdfIn PDF document text
    • http://navigator-nsk.ru/userfiles/file/82659347105.pdfIn PDF document text
    • http://hnhappiness.com/d/files/53845989836.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1620f04be2e454---68172328669.pdfIn PDF document text
    • http://semanbio.com/upload/files/42328179845.pdfIn PDF document text
    • http://bunny888.com/ckfinder/userfiles/files/dewubetiguxabita.pdfIn PDF document text
    • https://bepcongnghiepphuchung.vn/userfiles/file/93567760041.pdfIn PDF document text
    • http://d-a-s.cn/userfiles/file/57574153219.pdfIn PDF document text
    • https://ltes.tw-goods.com/UserFiles/files/kokiwiso.pdfIn PDF document text
    • https://artlabjo.com/userfiles/file/57917196126.pdfIn PDF document text
    • http://umbabox.com/userfiles/file/ketasumuzivemajojukid.pdfIn PDF document text
    • http://metaphorcreators.com/kcfinder/upload/files/jimemuzafop.pdfIn PDF document text
    • https://thegioidongphuc.net/ckfinder/userfiles/files/4241187851.pdfIn PDF document text
    • http://anpamedical.com/kcfinder/upload/files/zotefetekitiw.pdfIn PDF document text
    • http://robertfeinberglaw.com/images/edit_images/file/xelupelozatasikosateriwu.pdfIn PDF document text
    • https://najemwroclaw.com/userfiles/file/69970509400.pdfIn PDF document text
    • http://koreadramatour.com/FileData/ckfinder/files/20220206_A334BD64093E8A62.pdfIn PDF document text
    • http://sgyscom.com/upload_fck/file/2022-2-3/20220203153010337719.pdfIn PDF document text
    • http://doubles301.jp/files/ckeditor/files/58148593916.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_off00089fbf.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00089fbf.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00089fbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89FBF 10752 bytes
SHA-256: bc9e04765a5d453df0bcc057d2239db16b5965e15697db7a9777771dc5922c86
font_01_sfnt_off0008b83f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B83F 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0008cf5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF5A 19084 bytes
SHA-256: f91fcd59558cd869072b7a46bb639270c0c1ee05c1b8b83d3b67478c69f778f0