Malicious PDF — malware analysis report

Static analysis result for SHA-256 20589fa7464e7700…

MALICIOUS

PDF

58.1 KB Created: 2021-09-05 12:07:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 702e7521fba940c19946419f9e33a9fc SHA-1: fb9374fc5a7cba1433c7c4e52f697a4c4cd1cc15 SHA-256: 20589fa7464e77004114953304fd59c87e32b1e2ec4c41da41cfafc752960a8e
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories. The ClamAV detection and heuristic firings indicate this PDF is designed to lure users to malicious content, likely for phishing or malware delivery. Embedded JavaScript streams are also present, suggesting potential for further malicious actions.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3485

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 http://weilandensemble.nl/ckfinder/userfiles/files/pidaniwusad.pdf In PDF document text
    • http://abwbaltimore.com/uploads/files/30703325699.pdfIn PDF document text
    • http://morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16129f73fda671---88497906296.pdfIn PDF document text
    • http://proxima-design.cz/files/file/80212001379.pdfIn PDF document text
    • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb4d895a5a---dajit.pdfIn PDF document text
    • http://clinicaveterinariabilancino.it/userfiles/files/tevififewele.pdfIn PDF document text
    • http://zae.me/datafiles/file/manepisozumuwogifog.pdfIn PDF document text
    • http://macap.nl/app/webroot/files/userfiles/files/8438841813.pdfIn PDF document text
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/160752b0be16fd---53849746902.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/f4ce7b3fe3590cebdea54fc210f25470/81938866011.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cff4f4a702---topobevugosagowaroxaweri.pdfIn PDF document text
    • http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f19f9961ad---mapefowobetitewofusuzeref.pdfIn PDF document text
    • https://pellevah.com/upload/files/66393509017.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/1jvlvu18u6664nbui339hsp417/49272446783.pdfIn PDF document text
    • https://faktxeber.com/resimler/files/18384218600.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160a53cf5468e8---ruxubuzobakavexutewaboji.pdfIn PDF document text
    • http://61kidsclub.com/userfiles/file/sepisivaloganixoxumip.pdfIn PDF document text
    • http://fotografiafrancescosomma.com/userfiles/files/83470549599.pdfIn PDF document text
    • http://argol-editions.fr/userfiles/file/68728293897.pdfIn PDF document text
    • https://alcoolassistance-creuse.net/www/site/js/ckfinder/userfiles/files/29056018370.pdfIn PDF document text
    • https://magnettoptan.com/upload/ckfinder/files/90757039910.pdfIn PDF document text
    • https://adetexfoamgroup.centralcms.cloud/galeria/files/91049083745.pdfIn PDF document text
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b046950d7cb---fazilukofaloxip.pdfIn PDF document text
    • http://casavacanzesanvito.eu/userfiles/files/72267251834.pdfIn PDF document text
    • https://digireg.ch/upload/20182566996.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=strong+acid+and+weak+base+pdfPDF link annotation
    • http://cluster006.ovh.net/~greeters/be/ckfinder/userfiles/files/bogutadatex.pdfIn PDF document text

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