Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ff306be8a4d5111…

MALICIOUS

PDF

62.3 KB Created: 2021-09-04 08:15:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 7694f54e114392bbd24675c25bf195a0 SHA-1: 4c475306b95deb3495083a3e2b5dddcb84008df3 SHA-256: 4ff306be8a4d5111fee51f212503d0b5a79d7ca07773a511cca5e861d13f0598
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links to compromised websites, indicating it's designed to redirect users to malicious content. The 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics confirm the nature of these links. The ML classifier also flagged the PDF as malicious. No scripts were extracted, but the overall structure suggests a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5895

Heuristics 4

  • 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 https://philabc.ru/uplcv?utm_term=cartas+de+la+tierra+pdf PDF link annotation
    • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/4009cbcc96da767aea652304daf8191d/25563187583.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/aq67h8khn91m8ndrfhehbtvm0l/7037864549.pdfIn PDF document text
    • http://minhtoangalaxyhotel.vn/app/webroot/files/ckfinder/files/voxijanijuwanul.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607ff8a92a28f---82577622521.pdfIn PDF document text
    • https://iominneapolis.com/wp-content/plugins/super-forms/uploads/php/files/83a1f9f8bc8d10bf6d8ca3cd777b6952/17205996423.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16072ad7febf93---sevoxajarakenajoz.pdfIn PDF document text
    • http://hanhthien.net/uploads/file/dexomapisiv.pdfIn PDF document text
    • http://idroter.org/userfiles/files/jisoges.pdfIn PDF document text
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/i6tm9itlugi3vrmgfhrvpj1q3k/muwakilirezimobawa.pdfIn PDF document text
    • https://1877painters.com/FCKeditor/file/neketivepunegafap.pdfIn PDF document text
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f9dbb02efc---nulewabatavugenumodafami.pdfIn PDF document text
    • http://gattoneva.pl/pages/userfiles/file/17251160307.pdfIn PDF document text
    • http://fsanaq.com/upload/file/2108010309220735016vrmkmlgw7r9.pdfIn PDF document text
    • http://smartwealthhk.com/userfiles/vixodetipiral.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160f6eff9f4061---46439276167.pdfIn PDF document text
    • https://rlvanstory.com/wp-content/plugins/super-forms/uploads/php/files/a040cbe2a1a073fb92bc4e5f3a7ee4b5/lolegapenabudopodo.pdfIn PDF document text
    • http://skonasystems.com/userfiles/file/fizemewobodomu.pdfIn PDF document text
    • https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/13d5f418f1b5d5b69ecf892a5bdec98f/16616583596.pdfIn PDF document text
    • http://wixoon.hu/upload/file/pajibituvogujagatal.pdfIn PDF document text
    • https://srsatta.com/ckfinder/userfiles/files/zamojamefasifajevaza.pdfIn PDF document text
    • http://perfecthospitals.com/ckfinder/userfiles/files/kejopepixojetorigeli.pdfIn PDF document text
    • https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/56feba5ff02e84bd0fdd6d40298135c0/mitukisilefubetusane.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//47625729544.pdfIn PDF document text

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