Malicious PDF — malware analysis report

Static analysis result for SHA-256 d366253c3040fd0a…

MALICIOUS

PDF

51.1 KB Created: 2021-09-21 06:04:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 9588f25633f23e4d5d80374ddb2c8eb2 SHA-1: ba7793495d6b52e3dff247c531a62902056329f5 SHA-256: d366253c3040fd0ad9292f3a1589d0fc10d0669a19569dd30b86b360c560829c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains a link farm with numerous URLs pointing to compromised websites and disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of multiple external URIs and compromised CMS upload links suggests an attempt to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9425

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://drafthe.ru/uplcv?utm_term=drawn+to+life+apk PDF link annotation
    • https://aalatour.com/basefile/b2caalatourcom/files/xisodujunowonomulada.pdfIn PDF document text
    • http://swhwsolution.it/ckeditor-ckfinder-integration/uploads/files/781775759.pdfIn PDF document text
    • http://nhuaduongnhapkhauaz.org/upload/files/26750640691.pdfIn PDF document text
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/7a4c2867f09242ff2f6dfca192977d12/nasotopuzufekawezu.pdfIn PDF document text
    • https://akproauto.net/nbloom/fckuploads/file/litakujeki.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16136a833aa9fb---24709476056.pdfIn PDF document text
    • http://conniecorsentino.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/ronevuruvanixojitemibaxug.pdfIn PDF document text
    • https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/i1dk740dmllu53v9bvk182s5lj/809132410.pdfIn PDF document text
    • http://haraj-alqunfudhah.com/userfiles/file/rawewaneriradiwawonawej.pdfIn PDF document text
    • https://csn-alliance.com/data/files/kajatukozutinog.pdfIn PDF document text
    • http://cableesmaltado.com/d/files/lixiwitu.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1613f07ae7b786---bibubewexomajevut.pdfIn PDF document text
    • https://mrdak.cc/uploadfile/files/50503290823.pdfIn PDF document text
    • http://nhatminhtrading.vn/app/webroot/uploads/files/62838371233.pdfIn PDF document text
    • http://xenangheli.vn/public/files/54472718734.pdfIn PDF document text
    • https://dukupahit.com/contents/files/bogizuvotogugap.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613b8104b8fd4---liliwuzigoboxez.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/161382b20153ba---gizabewuvoxatavijixoxupin.pdfIn PDF document text
    • http://xtra360.net/campannas/file/16484344185.pdfIn PDF document text
    • http://jmestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/lurotigogusurefowusu.pdfIn PDF document text
    • http://jualumnitoronto.com/editor/uploadfiles/nejafumuwal.pdfIn PDF document text
    • http://rialta.ie/userfiles/files/62695606863.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/l8oaa30u2485qhupeeotbrn990/dumeguxazom.pdfIn PDF document text

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