Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af65184f635e5b4…

MALICIOUS

PDF

112.7 KB Created: 2021-06-27 16:18:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 953d35fcad6f54c2bdc68aaf1a18712c SHA-1: c9b40de81105f35d62c186dd433a44e49ffe039c SHA-256: 4af65184f635e5b4bae1a6a68e8a1328cca8c64177417cac0d7b3a90d04e211e
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://gorisum.net/fckeditor/upload_file/file/xijiwubebolebivo.pdf In PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160892b606c00b---98897537326.pdfIn PDF document text
    • http://lowchens.org/userfiles/file/zorasebojomiwode.pdfIn PDF document text
    • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/3iii88iv7427r15qkgcas33t4b/bidipavebep.pdfIn PDF document text
    • https://www.nexidia.it/wp-content/plugins/super-forms/uploads/php/files/5e7655cbf89e02fe0db6c1aba3565486/35993262742.pdfIn PDF document text
    • https://rpitrade.com/ckfinder/userfiles/files/31067560363.pdfIn PDF document text
    • http://kondicionery-ivanteevka.ru/upload_picture/file/kanigusisetadotavomupavof.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa32aef2d86---91958175415.pdfIn PDF document text
    • http://solartgaleria.hu/images/file/77212661756.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160b8998ca5a86---92505664588.pdfIn PDF document text
    • http://www.associatedomains.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd57237fdd---watajozi.pdfIn PDF document text
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/038a617a3580e24a94f9d6339a39a730/finage.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16071a1670b289---narobemonur.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609ace0ea83c3---dujifasafexikakegejixob.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c96da2705b6---goloduwiwigagezuzokun.pdfIn PDF document text
    • http://keacg.com/upload/files/1895965996.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/3174a79eb571709f15352127fb989f13/19225153823.pdfIn PDF document text
    • https://cabsfromheathrow.com/userfiles/file/83234588571.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2b6863c5b---fefor.pdfIn PDF document text
    • https://anthonygillant.com/userfiles/file/24700546250.pdfIn PDF document text
    • https://aprilboya.com/userfiles/file/lujisalurumigawa.pdfIn PDF document text
    • http://hotelbelleepoque.bg/userfiles/file/35794328966.pdfIn PDF document text
    • https://jahanchart.ir/data/files/file/14768186404.pdfIn PDF document text
    • http://speaklifeiamgreatness.com/files/files/27872409938.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=elementary+principles+of+chemical+processes+global+edition+solutionPDF 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_off00014f57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F57 19488 bytes
SHA-256: cff3d988b07c956804142fb452b105047fbb95a06820cae3a7ddb65f6dc4d753
font_01_sfnt_off00018291.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18291 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00019aa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19AA8 11404 bytes
SHA-256: c3ed0e0b8030c5392a9e92bc6e449468fc1fbd382b9c60d00997edfb4c0c76bd