Malicious PDF — malware analysis report

Static analysis result for SHA-256 425c17a1d40d0628…

MALICIOUS

PDF

77.8 KB Created: 2021-10-14 11:37:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 6117983841210aa00797039b23649ecb SHA-1: 4e175af214586591140e29c1a73111cb9349af70 SHA-256: 425c17a1d40d0628c62cb6f54c08d17776780971ca323bf791fe31fec599e180
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://zzlhlt.com/userfiles/file/LianMeng202110061735376484.pdf In PDF document text
    • http://mskabel.cz/UserFiles/File/mogone.pdfIn PDF document text
    • http://cerritos.songhakbbq.com/uploads/files/81941232415.pdfIn PDF document text
    • http://tutaylamhet.com/storage/ckfinder/files/finetanitifokaximal.pdfIn PDF document text
    • https://hashtag.school/userfiles/file/24651789813.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/16166bb5592d2f---jixurozokivutemuzawil.pdfIn PDF document text
    • https://santehsevast.ru/userfiles/files/fazanumudipepojasasijisex.pdfIn PDF document text
    • http://www.cenlaenvironmental.com/siteuploads/editorimg/file/fumotoju.pdfIn PDF document text
    • http://hylimusic.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/fedujobidajiligobavilijis.pdfIn PDF document text
    • https://camgloberealtor.com/userfiles/file/pugenuv.pdfIn PDF document text
    • http://chpcentre.com/files/file/44585100733.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/2344ab47e564f0e1c9a7b58b80d541d3/20407103651.pdfIn PDF document text
    • http://www.hebrewforreadingcomprehension.com/content/gabep.pdfIn PDF document text
    • http://salamatekhanevadeh.ir/ckeditor/files/files/kuriwunafutakibivilazikud.pdfIn PDF document text
    • https://texigo.tw/upfile/files/2021/09/29/jesibubaxadisukubimexaw.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/1ad9627db95fb25cfbffeca8cc4d84b7/28799331153.pdfIn PDF document text
    • https://resepangka.org/contents/files/jofekobuxozeviwep.pdfIn PDF document text
    • http://schubert-hh.de/image/file/51454596281.pdfIn PDF document text
    • http://ks-system.co.uk/ckfinder/userfiles/files/bepevewul.pdfIn PDF document text
    • http://insightonafrica.in/userfiles/file/36896029379.pdfIn PDF document text
    • http://vevo.keresztessyoptika.hu/elemek/file/88617870051.pdfIn PDF document text
    • https://www.confirmedtour.com/files/97209413506.pdfIn PDF document text
    • https://alsharqcc.com/userfiles/files/xuwisitekijegep.pdfIn PDF document text
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/7st13uem4vum3je8hl346cdcb9/dutogakaga.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/KGDyd8lM0uI/uplcv?utm_term=1200ml+in+litresPDF 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_off0000cb2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB2B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE342 10184 bytes
SHA-256: b24f42ce8705f2808d6879c52b8d96f2a58c4489ffec06f36c1036089ccb994e
font_02_sfnt_off0000fa10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA10 18240 bytes
SHA-256: 0dea4391cecfafebccd687bf364172604b90f37f52fb1fea8c94b175361fb5cc