Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ec0700c0a514033…

MALICIOUS

PDF

62.3 KB Created: 2021-08-19 02:23:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 1113c7cd14beb585c03509b7f3a1b238 SHA-1: c76f4ae63c885a1b80c5a5013649d8779f17ef35 SHA-256: 4ec0700c0a514033ea4ea079d3d7f55acda4015a5d7c85062b1f740b07809053
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a significant number of URLs, many of which point to compromised WordPress sites. These URLs form a link farm, a common technique used to distribute phishing content or malware. The ClamAV detection and ML classifier further support its malicious nature, indicating it's likely a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6913

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://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/1607f240a564fc---gutosuxixuwipoxipaxib.pdf In PDF document text
    • http://travellightnepal.com/userfiles/file/84340974912.pdfIn PDF document text
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/a4b4a0f086e05b9a3476dd1aa65cd4d7/68518155684.pdfIn PDF document text
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/1d8f79729d998f2fb81a9aaddbba513d/16075209562.pdfIn PDF document text
    • https://familienbilstrup.dk/userfiles/file/murekedokivik.pdfIn PDF document text
    • http://epoch-making.jp/js/upload/files/24252442079.pdfIn PDF document text
    • http://www.cenlafilm.com/siteuploads/editorimg/file/pukavekagopom.pdfIn PDF document text
    • http://animalscipublisher.com/files/upfiles/file/12063490939.pdfIn PDF document text
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160a10a446fcfa---24348614370.pdfIn PDF document text
    • https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/q1v0mskq50hob4cksqollgah2b/mujatenujiwibeta.pdfIn PDF document text
    • https://forumhrdbekasi.com/webroot/userfiles/files/rodup.pdfIn PDF document text
    • https://mmoxx.mn/userfiles/files/83810791363.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160834162a5376---doxivuwufuvolusexo.pdfIn PDF document text
    • http://a-pluset.com/userfiles/sikezekapedunakutu.pdfIn PDF document text
    • http://studiolorenzoni.eu/userfiles/files/fokujomedubu.pdfIn PDF document text
    • https://yapluka-services.fr/userfiles/file/ruvagukoreta.pdfIn PDF document text
    • https://misionesmedellin2030.com/wp-content/plugins/super-forms/uploads/php/files/euibme7c1ravucf3btaas9226o/36271732782.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/84540725615.pdfIn PDF document text
    • http://weingut-suppan.at/files/86130235616.pdfIn PDF document text
    • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/1607c9db71ba26---90645729510.pdfIn PDF document text
    • http://xn--80aaae7amexjfdlfdfg.xn--p1ai/files/file/fubilazivefuketafej.pdfIn PDF document text
    • https://dd-inside.de/userfile/file/32570258732.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=best+do+it+yourself+home+security+alarm+systemsPDF link annotation

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