Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f9e9af970b158cc…

MALICIOUS

PDF

62.5 KB Created: 2021-08-26 11:31:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 281ef307b7c515e66c47709a7ed61409 SHA-1: 96acea774e3a27ca6456b520fa8c1eac248d7218 SHA-256: 5f9e9af970b158cc2e4fc94a602286e7dc85df6a999e4b9c5c538b221162ada4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains numerous links pointing to compromised websites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and the nature of the URLs indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7670

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://allytemp.ru/uplcv?utm_term=take+me+down+the+road+i+believe+in PDF link annotation
    • http://www.klimavill.com//data/editorfile/fajisoralikap.pdfIn PDF document text
    • http://cungcapluonech.com/upload/files/tapukeromoguwasos.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/160f731ed56434---21147024943.pdfIn PDF document text
    • https://geneolock.com/locktactyuma/userfiles/file/xejajevosozo.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/4c5c25021024c75341525ff2241d3338/71399882305.pdfIn PDF document text
    • http://sshs1962.info/clients/3/33/33dcd814b32da85629335a95ab3d0158/File/rajipuroxifiwubapotedunal.pdfIn PDF document text
    • http://jr.ac.th/ckfinder/userfiles/files/mejotetoz.pdfIn PDF document text
    • https://bimstudioinc.com/media/files/kelimenizamuwuzax.pdfIn PDF document text
    • http://originalcheck.it/public/img_admin/file///rokebibuzewopuxozorebebul.pdfIn PDF document text
    • https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/45ce30c7630eeb574b489c4e897b9274/53055678976.pdfIn PDF document text
    • http://wabasnb.com/files/fckeditor/file/140049453060a59798ae118.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/ee8962749cfd0d320c8e67db435052ed/nuxasabefatapalovif.pdfIn PDF document text
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/90829ad2e9317aefc2ac06e515d35f28/ratazififowobota.pdfIn PDF document text
    • http://favorit.pl/userfiles/file/budubakirupugireb.pdfIn PDF document text
    • http://ecovn.vn/uploads/news_file/rafobef.pdfIn PDF document text
    • http://jhferry.com/data/fckeditor/file///vadorixiginexoxawopew.pdfIn PDF document text
    • http://vietsaovang.com/uploads/userfiles/file/vuwobiv.pdfIn PDF document text
    • http://emanuelarombiarchitetto.eu/userfiles/files/54561333715.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/1608f3dfec3a40---bijujakuxunafifosofum.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/01f3d56c5936a00adcf05a730452a56d/86262427797.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/617ad29b2bf01318d145592da6a25abb/96583407587.pdfIn PDF document text

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