Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d0063411a04b3a…

MALICIOUS

PDF

75.5 KB Created: 2021-08-31 12:02:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-27
MD5: b404be657b054433425026b6588e6b7e SHA-1: 03876ea42848d5a0b0729664ab81d972226340f0 SHA-256: c5d0063411a04b3a2d8ae5726aff173f3276fb4882d9d68e1895c8f5a9444ce4
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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 https://ketchas.ru/uplcv?utm_term=cca2+selected+answers PDF link annotation
    • http://seashoresilverlabradors.com/clients/4/48/482fd9669fb3260065120a60ccac5e48/File/77472077730.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070be528f744---93545829443.pdfIn PDF document text
    • http://qianxi.cn/filespath/files/20210828022439.pdfIn PDF document text
    • http://dichvuwebsites.com/media/ftp/file/19550501951.pdfIn PDF document text
    • http://nobody-films.com/bpms/includes/fckeditor_uploads/userfiles/file/48351847800.pdfIn PDF document text
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/fc2ac4aa859ea4651787b3d2f9b1ca18/zuwike.pdfIn PDF document text
    • https://tepihtrava.rs//files/86266499300.pdfIn PDF document text
    • https://askopenko.com/wp-content/plugins/super-forms/uploads/php/files/7dbb9a47c632a12af44dfb23d4a5d1d4/46094975685.pdfIn PDF document text
    • https://mmszke.hu/files/file/satetabivetamudifebidezu.pdfIn PDF document text
    • http://teknis.it/userfiles/files/wumogivoxixo.pdfIn PDF document text
    • http://worldprint.su/userfiles/file/95745075117.pdfIn PDF document text
    • https://baongochoa.com/upload/file/senemu.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/38358412519.pdfIn PDF document text
    • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d60f2505a9---jakatevoger.pdfIn PDF document text
    • https://doellefjelde-mussemarked.dk/images/newsmail/file/58716964860.pdfIn PDF document text
    • http://odnoklassniki-files.ru/images/uploads/files/72737422854.pdfIn PDF document text
    • http://apricomm.com/userData/board/file/23079796698.pdfIn PDF document text
    • https://syteq-pro.com/userfiles/file/gajejolafux.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c2e532a61d9---tapedabedepixuveb.pdfIn PDF document text
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075b59c53d5f---fonozoradatoriposifovaza.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607a77228b216---21533523590.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/b7003f3cc14cbbe27fcb53482e8f7833/83412041574.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_off0000c4dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4DD 10388 bytes
SHA-256: 415cb4da62bdda7d2add24f68b004b278c57f5b85860d21912eeb86d5c034379
font_01_sfnt_off0000dcac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCAC 16516 bytes
SHA-256: 6643521ac465f65c1fbeffb0c46ecbc2fee2e486418e3f2b43c1a7d05240b0d9
font_02_sfnt_off0001074a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1074A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1