Malicious PDF — malware analysis report

Static analysis result for SHA-256 326abab1f985a2ae…

MALICIOUS

PDF

70.7 KB Created: 2021-09-07 15:13:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 18f45280fe41377dae7b3c1836bffe93 SHA-1: 8097dbf0a6f94a25883b1141ce538c382c18de96 SHA-256: 326abab1f985a2ae8bcd027900f999384e8177eda79c1f8a27ca2a19be989657
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and exhibits characteristics of a link farm, directing users to multiple potentially compromised websites. The heuristics indicate the PDF contains external URIs and link farms hosted on disposable or compromised domains, suggesting an attempt to redirect users to malicious content. No scripts were extracted, but the presence of numerous suspicious URLs points towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier clean score 0.2453

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://oniceh.ru/uplcv?utm_term=speech+and+language+development+chart+pdf+asha PDF link annotation
    • http://oppedisanorobertosrl.com/userfiles/files/36699559178.pdfIn PDF document text
    • https://atesolve.com/ckfinder/userfiles/files/zubikaxal.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/02da41b9e3228962393771e2b5330d3c/logipiwefojolusuwoxab.pdfIn PDF document text
    • http://cuacongtudongbinhduong.com/upload/files/53057725603.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/a32a6b968f54a16e54dbde9df93efd0b/bemewodaviboxekanivit.pdfIn PDF document text
    • http://hdurmuslar.com/images_upload/files/lesatuz.pdfIn PDF document text
    • http://atsrealtyvietnam.com/upload/files/23108734489.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e61e0b125f---rudumelemajarame.pdfIn PDF document text
    • http://carriewoodfamily.com/clients/5/5b/5b9f2fb360c4065436fb7fe1267c3612/File/6577525630.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160801bddd6fdc---bugegazigogevadelig.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/i6l6l6votl0bnhtmo05eaufeob/busopamujapeteburup.pdfIn PDF document text
    • https://tigaintan.com/contents//files/2986665521.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/160833282b3d4e---jojozerurizurovike.pdfIn PDF document text
    • http://location-appartement-venise.com/italie_documents/files/xuvumamut.pdfIn PDF document text
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/bcbe816a7651818b93f188700d4f8db6/kizunazinudejagij.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a187aa039d7---wokovimasemotimimupufef.pdfIn PDF document text
    • https://psfund.org/public/uploads/files/cms_files/gogajejimuxeleledizesum.pdfIn PDF document text
    • https://tasivn.com/upload/ck/files/26167425977.pdfIn PDF document text
    • http://maychamsocda.vn/images/userfiles/file/vezaxo.pdfIn PDF document text
    • http://dienmaythanglong.org/uploads/files/63198034660.pdfIn PDF document text
    • https://www.chesapeake-lighting.com/wp-content/plugins/super-forms/uploads/php/files/7e118c1bf2efde5d6a1ff9dfdcdf0596/rupebav.pdfIn PDF document text
    • http://dok-vo.ru/userfiles/file/ratafago.pdfIn PDF document text
    • http://sm.ac.th/ckfinder/userfiles/files/30930294563.pdfIn PDF document text
    • https://mraos.com/web/userfiles/file/25244188555.pdfIn PDF document text
    • https://ph2020.org/FCKeditor/file/63562002610.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e81e8cb2b7.pdfIn PDF document text
    • https://cornwallstaffagency.com/userfiles/file/pegejelalalepepepoke.pdfIn PDF document text

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