Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdecc51e0294da21…

MALICIOUS

PDF

56.2 KB Created: 2021-07-21 19:44:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 34ee98107ac05638b0df2002d9693e8b SHA-1: 0e505c3b84b69be2f1168474a951b4ad8123ff43 SHA-256: cdecc51e0294da21b05cfe3af1748572a8f205f913184f09eb606d5c7469cd73
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, a common technique for executing malicious code within documents. This script likely redirects the user to external URLs hosted on compromised websites, as indicated by the 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristics. The ClamAV detection and ML classifier further support its malicious nature, pointing towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9046

Heuristics 6

  • 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
  • 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://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2744cc28d4---69423355796.pdf In PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/iefjbp5h9i8u555r327dhglktr/dunedozuwexiwolakagu.pdfIn PDF document text
    • https://implant-drill.com/userfiles/file/zunirovan.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbb3461804---mubekadokanarodixupesefa.pdfIn PDF document text
    • http://bielwod.com/userfiles/file/kazasukupo.pdfIn PDF document text
    • http://dedanskecasinoer.dk/userfiles/file/fekisezorabojedifel.pdfIn PDF document text
    • https://larioenergy.net/uploads/file/66862157506.pdfIn PDF document text
    • http://bestorkate.com/uploads/ckeditor/files/29445842833.pdfIn PDF document text
    • http://arserwood.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/2107071422049702899bjwoj.pdfIn PDF document text
    • http://pinzimoniofiumicino.eu/userfiles/files/dugikubi.pdfIn PDF document text
    • http://jamesirvinewedding.com/clients/f/f9/f947a18657f5d77a8fcd192ffd4ccf25/File/jininatemiboxezopasaduv.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/leviwodixigoga.pdfIn PDF document text
    • http://www.azurwelcomeservices.com/userfiles/file/40369199895.pdfIn PDF document text
    • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/f6mgibhvdatbv7t1uagbackmgi/52230486388.pdfIn PDF document text
    • http://www.tramag.pl/upload/file/jevubasime.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1607a4edc5543a---61497936863.pdfIn PDF document text
    • https://study4student.com/cache/fck_files/file/74431364775.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af5c32765f6---42161121820.pdfIn PDF document text
    • http://goodwynva.com/clients/d/de/de91e19d235d8a3764238851c6b73f99/File/29326689568.pdfIn PDF document text
    • https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/i6fotkg6qrqp036seeqv5knn50/87577640606.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070c2251804d---tuzajipinubozewu.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/160e061cee4f05---tozefawimuvoluv.pdfIn PDF document text
    • http://www.jamesbgriffinlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b50629585a---gusizorulufa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=if+im+20+when+was+i+bornPDF link annotation

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