Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0efb0045b5b86fd…

MALICIOUS

PDF

85.6 KB Created: 2021-09-02 00:53:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 953703bf245760d17dfa307dfe3f83c3 SHA-1: 60d29afcdf3253f62c1d8f0010b3aedc1b9003ca SHA-256: d0efb0045b5b86fd2987f31eddafc0da3d72b146d9de4f0489fd87cb9b4052b1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to lure users to potentially malicious destinations. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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
  • 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://majortaylorride.info/images/uploaded/file/51841114449.pdf In PDF document text
    • https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/bk3hentfbquqdofll0hnn00a4t/mosixuripefuzama.pdfIn PDF document text
    • https://discovercefalu.com/_data/images/file/79424129471.pdfIn PDF document text
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/a6c8f6fc77e548f0a47f6adc8ebc0a24/rekuxajeraxirunoweweze.pdfIn PDF document text
    • https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/h4oe2t39ne1kj94euk5ht3dblm/49071921235.pdfIn PDF document text
    • https://topupdana.com/contents//files/taditusudolopuxote.pdfIn PDF document text
    • https://rivnerun.club/images/files/viwafunimav.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609833c2bc086---wajubovibibafunug.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f139ba4b1ce---nevuzolerolebano.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/35c0c1a32b261ae4010008d936461032/55231239837.pdfIn PDF document text
    • http://realfootball.gr/userfiles/file/43815325471.pdfIn PDF document text
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bf18d7038d---42149623181.pdfIn PDF document text
    • http://airelimpio.mx/img/editor/file/24622260932.pdfIn PDF document text
    • https://cavalier-king-charles-spaniel.ch/userfiles/file/bakujovifuwuxejotif.pdfIn PDF document text
    • http://mesamiesdallas.org/clients/e/ee/ee8f1390623de39be1ac2b47a321719d/File/fexogof.pdfIn PDF document text
    • http://mevlanaasm.com/resimler/files/dawedejawajugitaji.pdfIn PDF document text
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160947a8e02dd8---51858286249.pdfIn PDF document text
    • https://tipresentoio.it/images/file/54015691764.pdfIn PDF document text
    • http://nutranghongngoc.com/media/ftp/file/4654694999.pdfIn PDF document text
    • https://iva-vietnam.com/userfiles/file/67518642482.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/805b40759ec27d00677bb97643c6e0f2/zekoterolisijus.pdfIn PDF document text
    • http://hz-kontejnery.cz/ckfinder/userfiles/files/11995740174.pdfIn PDF document text
    • http://cherriestattoo.com/ckfinder/userfiles/files/96519642800.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=the+scarlet+ibis+textPDF 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_off0000e8c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C8 10308 bytes
SHA-256: b7a16fa652fe52cbae96091f64908fc55e4caa0c58bee0d60e005c450c2891e2
font_01_sfnt_off00010028.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10028 18712 bytes
SHA-256: 684477f3a61307107ae64054e7063517fc4d6c264f4b3938477983a77d3e5b92
font_02_sfnt_off00013025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13025 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.