Malicious PDF — malware analysis report

Static analysis result for SHA-256 e513683d78f58ebf…

MALICIOUS

PDF

62.2 KB Created: 2021-09-01 17:08:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: ae784158ac2b993bbf3106b6e6a4ed4d SHA-1: 17325b19447dd0ec85014bb682682335fdf094cf SHA-256: e513683d78f58ebfb33da6ddb972f9b235dcc513677d549e816eaa5cfa654229
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to compromised WordPress upload directories and other disposable hosting sites. The primary purpose appears to be directing users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9533

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://altinhediyeler.com/calisma2/files/uploads/47112913714.pdf In PDF document text
    • https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/3843c55f28c23d7f34465e16face643d/457173264.pdfIn PDF document text
    • http://stylowa-pss.pl/userfiles/file/73923474167.pdfIn PDF document text
    • https://www.parquesanalbertohurtado.cl/ckfinder/userfiles/files/51066676725.pdfIn PDF document text
    • http://woorymart.com/userData/board/file/78300778880.pdfIn PDF document text
    • https://klubkanine.com/home/klub/public_html/ckfinder/userfiles/files/1599928431.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a395676c228---jexikafofavisazapokax.pdfIn PDF document text
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/3a2ae05d9d71bfe7f3b2befeb315f981/60915549197.pdfIn PDF document text
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bcc8e0e553---pukenexoteli.pdfIn PDF document text
    • http://gavinlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vewupupimal.pdfIn PDF document text
    • http://analogsys.com/uploaded/file/197334802260a03975a6061.pdfIn PDF document text
    • http://bebelino.ru/userfiles/file/76754815906.pdfIn PDF document text
    • https://sieompaysdebray.fr/lesiom/txt/imgadmin/file/ronikidikolutovunavubis.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160722e7191936---xuxifopujagagujumeki.pdfIn PDF document text
    • https://martensmgt.com/business_school/uploads/file/nirefinezigegikijaziko.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d83ed83d511---jixekajitumu.pdfIn PDF document text
    • https://fotoprint.lv/downloads/file/95695941666.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/16100b85c823bf---87199877267.pdfIn PDF document text
    • http://teaterskolen-efteruddannelsen.dk/ckfinder/userfiles/files/84199637682.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607807805cdf2---nodiribapufoziduvak.pdfIn PDF document text
    • http://www.doctor-carpet.com/wp-content/plugins/super-forms/uploads/php/files/gbf65u4ctv7v8l92tdffjm4v14/valinopegasodoj.pdfIn PDF document text
    • https://centrorevisionimonregalese.it/file/6518936620.pdfIn PDF document text
    • https://blnk.eu/userfiles/files/51780546134.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=coptic+easter+2021PDF link annotation

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