Malicious PDF — malware analysis report

Static analysis result for SHA-256 230387d988689cac…

MALICIOUS

PDF

73.4 KB Created: 2021-08-09 08:07:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 27b9606c90c0cb014a8294cd7d23c026 SHA-1: bfb51da9ce2bb1a1465779110ff964085c412bfe SHA-256: 230387d988689cacf8f891bfec404bf41f03a9d46c264e81b0bbe02fca798895
124 Risk Score

Malware Insights

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

The file is a PDF that contains a large number of external links, many of which point to compromised websites or disposable domains. This behavior is indicative of a link farm designed to distribute phishing content or malware. The ClamAV detection further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4440

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://nomylo.ru/uplcv?utm_term=what+size+tires+for+my+2005+honda+odyssey PDF link annotation
    • http://baudoinfamily.com/clients/f/fc/fc66627f90e8a365851b026dcf169025/File/taduwurizomukegel.pdfIn PDF document text
    • http://vom-ragnaroek.de/uploads/file/vogasoduzilop.pdfIn PDF document text
    • http://coyada.com/up_images/up_images/bololedubog.pdfIn PDF document text
    • http://www.urbanwaterways.info/files/93711956964.pdfIn PDF document text
    • https://whitesal.com/data/images/file/8574_20210529120609.pdfIn PDF document text
    • http://10glazsikeyrosa.ru/file/bigamudifu.pdfIn PDF document text
    • https://chataigne-cevennes.fr/imgs/files/80001167969.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608dfa21e347e---fiboderarafujevila.pdfIn PDF document text
    • https://lederstuehle-shop.de/ckfinder/userfiles/files/pomubajomuzur.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd4191ccafa---53319937624.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093d4cb17b77---42442222663.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606faac1b882b---43148961814.pdfIn PDF document text
    • https://soba05.org/wp-content/plugins/super-forms/uploads/php/files/0437fb3afdb12bb6a6268e0ab9714f3e/24232896189.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c91591e4cfa---ratapukegawosalojatagekis.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ec4ca2ad4ea---koxolelimig.pdfIn PDF document text
    • https://alternatifhirdavat.com/upload/ckfinder/files/vesonozilo.pdfIn PDF document text
    • http://ruihuitax.com/files/file/69383238941.pdfIn PDF document text
    • http://georgefamilyreunion.org/clients/86186/File/58028839376.pdfIn PDF document text
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/dc3b09c1509c1f23cacb1bee5096ef54/96179138134.pdfIn PDF document text
    • https://maharajganjtimes.com/assets/ckfinder/core/connector/php/uploads/files/rabafakurokoganepelug.pdfIn PDF document text
    • https://avphunter.ro/ckfinder/userfiles/files/96179060329.pdfIn PDF document text
    • http://ilovegabal.net/fckeditor/_upload/file/wefemufanalifaruletopudu.pdfIn PDF document text
    • http://71mhsreunion.com/clients/f/fd/fd19d29f3ef40f7e1d0269d1df38e7d4/File/sigavokutimoxefunadopogor.pdfIn PDF document text
    • http://thanuyentea.com/ckfinder/userfiles/files/11039110234.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160a5766b84b75---fixus.pdfIn PDF document text
    • http://www.themixchange.com/userfiles/files/52853161004.pdfIn PDF document text

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