Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc39fe98f5161cf2…

MALICIOUS

PDF

47.2 KB Created: 2021-07-08 00:25:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 56381a1ccd9c87f3bd116c7e8851c486 SHA-1: 9c07e2c3807a35e2f4cc08a5ba8a6eb0b481645d SHA-256: bc39fe98f5161cf2740e182a63f1855cdb07e05340e21ee51372a1bc683165bc
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links pointing to compromised WordPress sites and other domains, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the structure and URL patterns are consistent with a malicious PDF dropper.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9450

Heuristics 5

  • 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
  • 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://inwebjor.ru/uplcv?utm_term=ms+excel+full+course+pdf PDF link annotation
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160840697e61a5---volunedopizezekezi.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160889dc10116f---59215065843.pdfIn PDF document text
    • http://alt-1c.ru/userfiles/file/18037133469.pdfIn PDF document text
    • http://akkoryazilim.com/userfiles/file/71062366305.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/73651029338.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/1e4bded70481a7ae050ad518462ef0cf/96750861537.pdfIn PDF document text
    • https://www.acetechnology.co.in/wp-content/plugins/super-forms/uploads/php/files/uj46ilp5okiv0tc5ho3mfghbsf/18241299026.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c72efcddc80---38637252919.pdfIn PDF document text
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160ba6b38b2d83---72619571863.pdfIn PDF document text
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/912fc0181f921ef311843dfe729f2cd9/palumunoruzajimivip.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607309b9852ca---50145052329.pdfIn PDF document text
    • http://teplospectr.ru/images/files/zitew.pdfIn PDF document text
    • http://brlairport.com/images/file/62081274439.pdfIn PDF document text
    • https://avistravel.ro/userfiles/file/98272081546.pdfIn PDF document text
    • https://www.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/363cf12b49ec5d181e4d53461bd9c63d/pixafulutusuvefinizaliti.pdfIn PDF document text
    • http://truhlarstvisollner.cz/data/file/zazabukojaranarizifuz.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607053b10c1d3---95226967480.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609a747868dc1---87461145183.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609ef3ed3fe9b---80793037603.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607c467ea31ef---pawubufixagafuwipumuputuw.pdfIn PDF document text
    • https://groupunsur3.com/contents//files/47789252602.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/sq00pn9gopt8a1qgo47acsup0k/sarow.pdfIn PDF document text

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