Malicious PDF — malware analysis report

Static analysis result for SHA-256 2676278cc1062523…

MALICIOUS

PDF

91.6 KB Created: 2021-06-28 05:18:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: d5c751c5230c5a4462fa7ba2be8c824c SHA-1: 8a28fcbb550394e23e0f0021e618c793d1d876be SHA-256: 2676278cc106252395fd59a1c01625e082d5f3322025473bcd27e888e9ec767e
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external links, many pointing to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded JavaScript likely facilitates the redirection to these malicious sites, which are characteristic of phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fb2192814e---wavimakifemivitolelixe.pdf In PDF document text
    • https://mariellatriolo.it/public/file/nabusuruta.pdfIn PDF document text
    • https://childprotectionindia.com/lexcyberia/userfiles/files/90515208493.pdfIn PDF document text
    • https://kildevangen.dk/files/xokagelezezukoxa.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608504185636a---fafarefapi.pdfIn PDF document text
    • http://xn--49s538bo8ux8c.net/userfiles/file/54994807752.pdfIn PDF document text
    • http://okmarin.ru/userfiles/file/54729593850.pdfIn PDF document text
    • https://www.oneirishrover.com/wp-content/plugins/super-forms/uploads/php/files/e66674954a2cb40373f89f00c0d6dfd6/sivaninesudozetixud.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/4rmu47pmpuq9l49lrq0h6aiq23/vebamirabaduva.pdfIn PDF document text
    • http://aldo-ins.com/userfiles/file/69328170283.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/bdf0acfce4a6cd8399eb36c23498d638/lapotiwujigawonaga.pdfIn PDF document text
    • http://northphoenixmustangs66.com/clients/4/4b/4b49b54eec06ebba3741256e9f3e6f2b/File/30797485755.pdfIn PDF document text
    • http://hjtech.org/admin/upfile/file/juzisiraxovalolizeforaseb.pdfIn PDF document text
    • http://anchor-m.com/js/upload/files/vipoxatezikupelofufuj.pdfIn PDF document text
    • https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/99svg1llel36ejbn3jgvo224bc/51064970593.pdfIn PDF document text
    • https://n-zvuk.ru/upload/file/28242616477.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/vmv0lp91r61d6d28qs50gk3c2l/nanedomuxonogiza.pdfIn PDF document text
    • http://stinpo.com/ckfinder/userfiles/files/66643052359.pdfIn PDF document text
    • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079c232ce3e3---kejipopejatiputup.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b367c08f2ed---59720511352.pdfIn PDF document text
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b480e5bfcc1---40225026522.pdfIn PDF document text
    • https://szamitogep-szerviz-javitas.hu/ckfinder/userfiles/files/vinenipuxivexesegidopa.pdfIn PDF document text
    • http://sahamit.net/userfiles/file/19928592179.pdfIn PDF document text
    • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/06034624033dc32e90872a849c3b7ed3/78772458259.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=hypersalivation+in+babiesPDF 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_off000103e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E2 17344 bytes
SHA-256: 48ec37985fd02b377fd305f286ea88b32ae279b1dac8c110b41cd639a3334221
font_01_sfnt_off0001313c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1313C 10556 bytes
SHA-256: 976e58818cf2b78ec9daaa171efa04e25109fbae563964d6ba45b81b9bdf72a4
font_02_sfnt_off00014938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14938 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1