Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba54aaca4a0f8ea6…

MALICIOUS

PDF

66.5 KB Created: 2021-09-02 23:46:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 637b7479751a483be612729dc83ba539 SHA-1: 7622766f6907cc8ef27dc66cf1a2d2e8083a1dad SHA-256: ba54aaca4a0f8ea6e3b98b2c1f8cdb9cdc7f539908bfd3516f3e2c8978d55bb6
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a link farm pointing to compromised WordPress sites, indicating an attempt to distribute further malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a phishing or trojan distribution scheme. The embedded JavaScript likely facilitates the redirection or download of malicious payloads.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4667

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://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fd9be142255---48534857446.pdf In PDF document text
    • http://www.pattyn360.com/upload/forum/files/97036017692.pdfIn PDF document text
    • http://www.cenlajobinator.com/siteuploads/editorimg/file/59578893034.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160745285dec87---29006375013.pdfIn PDF document text
    • http://www.sudaff.com/pics/file/nelusofewe.pdfIn PDF document text
    • http://rlponder.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tupesipatezavofaxal.pdfIn PDF document text
    • http://morard-mcf.fr/data/Files/najobiton.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6223fbe237---ruzigegewemovili.pdfIn PDF document text
    • http://xn--or3bi2da319p.com/upload/fckeditor/file/31364185605.pdfIn PDF document text
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b788e5132c1---67751052324.pdfIn PDF document text
    • http://fitnessklub-impuls.pl/uploads/assets/file/40654673206.pdfIn PDF document text
    • http://ideviceplus.be/app/webroot/files/userfiles/files/nowigeganedogag.pdfIn PDF document text
    • http://polloricowings.com/uploads/files/8226124298.pdfIn PDF document text
    • http://yuanhebiotech.com/upload/files/28945354719.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/89589404f7b4f61aed041629ed64e1cf/pejofabe.pdfIn PDF document text
    • https://boumqueur-edition.com/upload/fckeditor/file/67612577888.pdfIn PDF document text
    • http://ritadas.in/userfiles/file/najojavajanexo.pdfIn PDF document text
    • https://www.tanyadantus.com/wp-content/plugins/super-forms/uploads/php/files/1c5547e5a683532828395fb1d5cbaa44/46245601624.pdfIn PDF document text
    • http://influences-vegetales.eu/assets/Image/files/jepusumatepinofuxubigu.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16073bad991017---nurijit.pdfIn PDF document text
    • http://agriturismofattorialucciano.com/ckfinder/userfiles/files/dozovigedifi.pdfIn PDF document text
    • https://horacebatten.com/ckfinder/userfiles/files/nunasali.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/1607f817a3e536---zavinafop.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1612461330d2dd---57795889063.pdfIn PDF document text
    • http://coniperfumes.cl/js/ckfinder/userfiles/files/55508117783.pdfIn PDF document text
    • https://blokhol.com/upload/files/89553764517.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=math+transformations+worksheetsPDF link annotation

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