Malicious PDF — malware analysis report

Static analysis result for SHA-256 78f88427f760e7b0…

MALICIOUS

PDF

70.3 KB Created: 2021-07-14 08:35:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 6d7d05af04672fca8eabd2054074f12f SHA-1: 5d7de01aa437d501dfc3373b46ee093ad1951ca0 SHA-256: 78f88427f760e7b080bfdfb9182d2c566de42c270df931acc97045e43ab79c6b
124 Risk Score

Malware Insights

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

This PDF file functions as a link farm, containing numerous URLs that point to compromised WordPress upload directories. The ClamAV detection and the nature of the URLs suggest a phishing or malware distribution scheme. The file's primary purpose appears to be redirecting users to potentially malicious content hosted on these compromised sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4729

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 https://coretry.ru/uplcv?utm_term=the+most+effective+current+treatment+for+bulimia+is PDF link annotation
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/097432a790dda17efcdd3b398f12e4af/virurepulonotejelujitot.pdfIn PDF document text
    • https://abeess.com/userfiles/file/buverixuxizegofebeso.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/gawolugifibukamuxena.pdfIn PDF document text
    • http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/faf23bdab386d0734a2a7eca9ffba4d1/zibilewipejudiz.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160ab2d7b14850---58814895363.pdfIn PDF document text
    • http://gayaarchi.com/userfiles/file/20210618191832.pdfIn PDF document text
    • https://virtualpulse.eu/UserFiles/file/libezazajexud.pdfIn PDF document text
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/160b5b2d09c8dd---12412798071.pdfIn PDF document text
    • https://cafepiolho.com/uploads/assets/todokesoxurawefap.pdfIn PDF document text
    • http://qlinairnv.be/userfiles/file/famapuxi.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0140f4a2dc---gixugazexofagobonexemu.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16099f8e9bb046---15325217580.pdfIn PDF document text
    • https://bloomland.com/sites/bloomland.com/files/fumixizoforitinub.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d031187c5a---77336456293.pdfIn PDF document text
    • http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dc2f20d8a0---dazaboseganorotizidalax.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2a483f919---fomavizorunaligoxekafe.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f93dd1997e---zamokarejukemag.pdfIn PDF document text
    • http://jjmcp.jp/userfiles/Image/file/12190859880.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/vapex.pdfIn PDF document text
    • https://aashianarealty.com/file/fexes.pdfIn PDF document text
    • https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/43fdcd2e948ba8b18ce196838aedb022/zazuso.pdfIn PDF document text
    • http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ff7ee36e82---12593470775.pdfIn PDF document text
    • http://georgefamilyreunion.org/clients/86186/File/pumotilovunaboxif.pdfIn PDF document text
    • https://www.hotelamoha.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607d900e20af0---87994094142.pdfIn PDF document text

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