Malicious PDF — malware analysis report

Static analysis result for SHA-256 435dd25c8865d9f3…

MALICIOUS

PDF

80.0 KB Created: 2021-07-05 14:51:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 487a672d2b9f42889489234d432d96bd SHA-1: bded72891b706c7b240eb58b85d13110ab39e6b5 SHA-256: 435dd25c8865d9f35fc8db705d6f613ae82f4ff09ff3a320f23fe8a8185c4076
124 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and exhibits characteristics of a link farm, with numerous embedded URLs pointing to potentially compromised websites. The PDF structure and the presence of multiple links suggest an attempt to direct users to external resources, likely for phishing or to download further malicious content. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4833

Heuristics 5

  • 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
  • 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://heritagecarletonplace.com/clients/c/c2/c23aa4fb54f25340752d20cfcff880b2/File/puxikudaxekavakirom.pdf In PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607813a4e91b4---95729073023.pdfIn PDF document text
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/nonn0gdq52di0b0vlarme7t6l2/93368183083.pdfIn PDF document text
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfed2421ba7---sanebadiripawasafi.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/160864fa4b9d1f---kavamuv.pdfIn PDF document text
    • http://airelimpio.mx/img/editor/file/70226426033.pdfIn PDF document text
    • https://kozhikodedeaf.org/admin/my_files/file/favilumodibodizisewuka.pdfIn PDF document text
    • https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/f9eab8b5e6deee177ee9e6f5a400a744/1993372617.pdfIn PDF document text
    • http://ledspectrumthai.com/ckfinder/userfiles/files/modoxevewozisirivusokavoz.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/1608a7ca72b2ce---sosuxoluvimeja.pdfIn PDF document text
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/if1fkdl155je3cns6qpi6strj0/1313238707.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606eaff1b3201---50047092180.pdfIn PDF document text
    • http://bagumul.com/file_upload/spaw_upload/file/20210531025438.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a0d6c02f8c1---56401242824.pdfIn PDF document text
    • http://eprdel.cz/userfiles/file/nuvobegeboxagafifudavoze.pdfIn PDF document text
    • https://accuratesearch.com/userfiles/file/zetazawu.pdfIn PDF document text
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/a2aa626bf52e10064c1fd73a8aa6c0ce/94862305178.pdfIn PDF document text
    • https://supermagnum-bg.com/userfiles/file/11157380894.pdfIn PDF document text
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/f38971b48d5e436c0d302b55ebdcfff3/gimosigebizip.pdfIn PDF document text
    • http://status-go.net/gfx/userfiles/files/xerevofuno.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aaba713a337---70097366849.pdfIn PDF document text
    • http://rocincorporated.com/domain.com/images/dynamic_pages/file/lezuwaji.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b8c96a32eb7---2850077599.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/70d309e0bfb0cb24571840e5d2342366/47129349302.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/eocq4jqha9k935na1rps3pm509/tuvigu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=how+long+does+it+take+to+fix+forward+head+posturePDF link annotation

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