Malicious PDF — malware analysis report

Static analysis result for SHA-256 8347fd652f0a8abe…

MALICIOUS

PDF

60.9 KB Created: 2021-07-18 00:00:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 6b6ff7dff558d3ac5fa75b8c1af090b0 SHA-1: 0e95a98b8f6d4b74b51cdd5201e33405acfd523d SHA-256: 8347fd652f0a8abe5b863748f2ec01ea44d3ff5b94b7e064b2d90c3fa95c2d17
124 Risk Score

Malware Insights

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

The PDF file contains a link farm pointing to numerous compromised WordPress sites, indicating a phishing or malware distribution attempt. The ClamAV heuristic specifically identifies it as a 'Pdf.Phishing.Trojan', reinforcing the malicious intent. The document body is heavily obfuscated and unreadable, providing no direct user-facing content but the structure and heuristics strongly suggest a malicious purpose.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3255

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://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/kmt1oo81j088v0sbg4euel37v6/ruzukegopusiditetel.pdf In PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606fd22dc94ed---zagopuselerunutoj.pdfIn PDF document text
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/1024255b478a393f8f738506552b6fa7/26911738060.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16085d7886b723---kabovuzavikomezefadu.pdfIn PDF document text
    • https://karapinler.com/calisma2/files/uploads/dibigokugamevi.pdfIn PDF document text
    • http://mesterek.net/tmp/petevuvajafoxok.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/3k22d1hfou9p53moel2vcuv380/bodosasogiworuxotiwotot.pdfIn PDF document text
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/44f7f48763c8f4fcf4477e383af96747/lisejuzadutewutuzaj.pdfIn PDF document text
    • http://gramercygrand.ru/files/file/27161776715.pdfIn PDF document text
    • https://catbasailing.com/upload/fck/file/levijeboxuzubejagixano.pdfIn PDF document text
    • http://k1a.ru/images/files/file/xumesefuviwaxaratam.pdfIn PDF document text
    • https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/1c0bf856b60cc47786d65f7d028323d9/94865364449.pdfIn PDF document text
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/212e724a14d7264d33b474ca1ca3ce06/ruwolixifewenorubenudiv.pdfIn PDF document text
    • https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/5784abdbf5e5c01cdb0700581147a931/36843445269.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/539bb59cab599a47842f4ebd76047b44/povavoso.pdfIn PDF document text
    • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607f2a75e956a---bodirenarawanigufifuletid.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b4974c4f26a---juwasufowiv.pdfIn PDF document text
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/a26e9c91eba2454e36262ee9cff192c7/80001146762.pdfIn PDF document text
    • http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16082b9494568a---nakewibakapij.pdfIn PDF document text
    • http://crmrealty360degree.in/userfiles/file/67981976036.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607c1489338a6---pobubamosufebevasigudajef.pdfIn PDF document text
    • http://bvmnotarissen.nl/app/webroot/files/ckeditor_files/files/40226240582.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c92ac9976e8---15786157930.pdfIn PDF document text
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/4e8bc0db9891f4d2b1e36b995d24c197/lezagogamoramepawokubej.pdfIn PDF document text
    • https://store-connector.com/_upload_bilder/_filemanager/file/wisedasumajikagip.pdfIn PDF document text
    • http://morethancars.nl/uploads/edytor/file/98571562287.pdfIn PDF document text
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/670715bd00824b20a639aa4853187a05/gigawiwigozo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=colours+beginning+with+uPDF link annotation