Malicious PDF — malware analysis report

Static analysis result for SHA-256 c83d8bf122e42513…

MALICIOUS

PDF

68.3 KB Created: 2021-08-12 02:57:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 01a872b169834f33ae5f2887e18d6c9f SHA-1: dd7a72db3f0220022e7d426c5d7b22b328ce13ca SHA-256: c83d8bf122e42513052f756bd4763dca59d1e09961f95c4f919af6955637ddd9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains numerous links, many pointing to compromised WordPress upload directories and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9537

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 http://hoggard1975.com/clients/a/a4/a43fc1111b7ad4318f8b553feb79a890/File/13282022758.pdf In PDF document text
    • https://sportuna.be/ckfinder/userfiles/files/fadawafenenefigofuvub.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ad00eca35d8---nuwejatajamojudumima.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/jlp3bkhgpfjd8bnb30tc7db073/xejafuwizupimukofi.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/1vv7lbci6jufoh3lq0onqu0ku4/68529670771.pdfIn PDF document text
    • http://szerecsengyogyszertar.hu/editor_up/zemuzosowalivap.pdfIn PDF document text
    • http://shadesvalleymounties1969.com/clients/868959/File/dokaniwesifujikuze.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/e80935222e1e5751922c4645bdb52749/jopufelidasarilu.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/48r9tmbeo6kff1rh2jo3l14t83/suzanaxejogaze.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608c6614ab2e5---96114092012.pdfIn PDF document text
    • http://flygarfield.net/userfiles/file/77217030935.pdfIn PDF document text
    • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/fd33e17d27cf9ce5cfe8ee41d21921fa/26389650274.pdfIn PDF document text
    • http://china-hold.com/UploadFile/file/20210805135715151.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/9c3c27a2b706bb67b6bbb91fd05e9a5b/kifijeren.pdfIn PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9d5a781da6---31748906333.pdfIn PDF document text
    • http://imaginove.eu/data/Files/14466475890.pdfIn PDF document text
    • http://aryajob.com/user_upload/file/32701604963.pdfIn PDF document text
    • https://pacantioquia.org/aym_image/files/28200794729.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160717d2cd89ec---72977974736.pdfIn PDF document text
    • https://oxfordjsr.com/userfiles/file/tigisirami.pdfIn PDF document text
    • http://kesifveotesi.com/files/19740455713.pdfIn PDF document text
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/1cb0b90c73592d4a12d2d02078b5cc1b/66256230229.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/870ba8bd24a7ec3c2cc00ec9433aad57/giguxedizaxen.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/f2k1soreqsjkdjrf8likr9r093/serefanowisekabuwolev.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=evaluacion+lengua+6+primaria+santillana+saber+hacer+pdfPDF link annotation

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