Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af1ab1031b571cd…

MALICIOUS

PDF

67.8 KB Created: 2021-12-10 13:46:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 0689a839b9ca7f927d47325c85eb3f18 SHA-1: f56366d381d5e1c0272ea313bd858774f676724d SHA-256: 4af1ab1031b571cd97274519553184d47162759c333133bbf8bf2a87a8b21a7e
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://sperrincaravans.com/images/file/7286612259.pdf In PDF document text
    • http://pactolous.hu/upload/file/zafunefavanosipi.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16154566993652---virurofirosaxututoku.pdfIn PDF document text
    • http://bankerz.in/qpic/files/29427687467.pdfIn PDF document text
    • http://valdhans.cz/userfiles/file/vapomelefedigiso.pdfIn PDF document text
    • http://amblesidewindermere.ca/fckuploads/images/file/29992613889.pdfIn PDF document text
    • http://net-marketing.hu/images/files/godofigikuwobo.pdfIn PDF document text
    • https://ripedesign.com/app/webroot/files/fckeditor/file/noforamajoreziwukigekef.pdfIn PDF document text
    • http://napiarsaigh.com/images/dopejopevosegof.pdfIn PDF document text
    • http://15449010.com/FileData/ckfinder/files/20211115_4EBE9408281FC97A.pdfIn PDF document text
    • https://duythanhsd.webthoidai.com/img-dn/files/limuvofomuzur.pdfIn PDF document text
    • https://www.hotel-restaurant-plainfaing.fr/ckfinder/userfiles/files/16492450884.pdfIn PDF document text
    • https://reformedgeneration.com/userfiles/file/bemokanigavovag.pdfIn PDF document text
    • http://e-store-sys.com/userfiles/file/81478742372.pdfIn PDF document text
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/3412820facede0fb56ed7ef2418cfe5d/pawekobomatuk.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16155e3c8032a3---2063420873.pdfIn PDF document text
    • http://fteq.ru/files/file/91008831192.pdfIn PDF document text
    • https://sealand-pptc.com/userfiles/file/25777873787.pdfIn PDF document text
    • http://justsayhi365.com/uploads/file/xavasomavilewejuvo.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614baf75c30a6---61741220247.pdfIn PDF document text
    • https://gujaratisamajparis.org/upload/files/49822954725.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/86ehls1vmqbte1iqmgalctquf4/disidutigot.pdfIn PDF document text
    • https://babetravelling.com/ckfinder/userfiles2/files/95467912559.pdfIn PDF document text
    • http://qualityfirstservices.pro/testingsites/advantage_aviation/assets/media/file/28721796357.pdfIn PDF document text
    • http://tokyo-sanritsu.com/userfiles/file/daleg.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/Z3ufxtS7Wvw/uplcv?utm_term=html+javascript+src+absolute+pathPDF 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_off0000a2f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2F9 10960 bytes
SHA-256: d6b608d0e28be350d7a0d20f736a4e39c00dde700ed3161ef83aded59a497961
font_01_sfnt_off0000bc20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC20 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0000d2bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2BF 18000 bytes
SHA-256: 2667b20a4539dd9035e740778ddc0a9dcc051541925c19de0361c3e3790b84e2