Malicious PDF — malware analysis report

Static analysis result for SHA-256 2543325f95c2ae59…

MALICIOUS

PDF

62.3 KB Created: 2021-09-01 09:50:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 490897f37516e2808b0d5132fa61787b SHA-1: b8df2112f30a35ef88606cc3f4d71f714b4e8660 SHA-256: 2543325f95c2ae59bcadfb2efbb04107aca5e3384719bebd9b0fa57d763e51a1
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It contains embedded JavaScript and a link farm pointing to compromised WordPress uploads and disposable hosting, suggesting it's designed to redirect users to malicious sites. The presence of external URIs and a link farm indicates an attempt to distribute further malicious content or phish for information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8923

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://poslovniimenik.net/firme_data/files/ziluwamesud.pdf In PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/16087edc204f61---xofisutovuvaruzus.pdfIn PDF document text
    • http://uforoi.com/app/webroot/uploads/files/tewimekofafuseva.pdfIn PDF document text
    • http://netinflux.net/userfiles/file/37684058029.pdfIn PDF document text
    • http://bebsulmare.com/userfiles/files/dukujawajixub.pdfIn PDF document text
    • http://nwatchonline.org/userfiles/file/wijifojigu.pdfIn PDF document text
    • https://gerastar.com/userfiles/file/garipabe.pdfIn PDF document text
    • https://moraure.net/js/ckfinder/userfiles/files/nakowoxazegixokolefulugev.pdfIn PDF document text
    • http://cuakeobinhduong.com/upload/files/rogapubirobivuxekizu.pdfIn PDF document text
    • http://anneadamslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/96681208888.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/fjbc81hreg8q076fl5let5ece8/31871048929.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/r2p3vlihd3090eg86h1htam560/36927578138.pdfIn PDF document text
    • http://resetimpianti.it/reset/public/file/95340500761.pdfIn PDF document text
    • http://mirsistem.com/depo/sayfaresim/file/wodetofafarenolubexe.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/e74189cc4675b53afec981ed0c04f5cc/23852825098.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1608def06d4d07---vibeketugibal.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1d90c22d71---vinew.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1610432dd61ed3---37013658219.pdfIn PDF document text
    • http://kolaykanal.com/userfiles/files/84344196260.pdfIn PDF document text
    • http://xn--22cjbbm2eyae3ehabdb4kqdtae3dxnnc1fhf.com/user_img/files/guwowimijagewoze.pdfIn PDF document text
    • http://cathyknightwaite.com/ckfinder/userfiles/files/wefilovefajakakekifili.pdfIn PDF document text
    • http://alkanboya.com/files/file///bajenebub.pdfIn PDF document text
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/cec2af9c947e9379dae25d16db337488/silemenixazofe.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/ok5jgi6i4anjsvtql2kgqdsivd/zudoginuxudesoxa.pdfIn PDF document text
    • https://charterboatdeliverance.com/uploads/files/wajezemazebitobotav.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=mars+and+venus+in+the+bedroom+pdf+free+downloadPDF link annotation

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