Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe0a4078ff987500…

MALICIOUS

PDF

95.7 KB Created: 2021-09-19 02:15:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 857c8862508477d5ab2045731f9d8e35 SHA-1: b879900b79b407f4287459fc73b131a6efc50aa4 SHA-256: fe0a4078ff98750072acf0f8f059df2af26b8939d3cd633695510e10840087f3
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious. It contains numerous embedded URLs, many of which point to PDF files hosted on various domains, suggesting a link farm designed to obscure the ultimate destination. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high likelihood of this being a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8324

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://studioarchterreni.it/userfiles/files/nigebigatilukerem.pdf In PDF document text
    • http://liceoadultos.juniorcollege.cl/userfiles/files/sajojalufaver.pdfIn PDF document text
    • https://lecachet.fr/docs/files/40183636922.pdfIn PDF document text
    • http://architettoletiziamasciotta.eu/userfiles/files/20716354920.pdfIn PDF document text
    • https://jin-ji.com/upload/files/futaparirisobozif.pdfIn PDF document text
    • http://mazurubezpieczenia.pl/zdjecia/fck/file/wodudim.pdfIn PDF document text
    • http://sujitonweb.com/userfiles/files/tipuguninilafufumegaxod.pdfIn PDF document text
    • https://training-access.com/upload/file/ziwofepesofugu.pdfIn PDF document text
    • http://smarttechsolutionukltd.com/uploaded_files/userfiles/files/86767353390.pdfIn PDF document text
    • https://icoachyou.biz/images/ckeditor/files/65636725521.pdfIn PDF document text
    • http://mindentudor.hu/userfiles/file/4355976252.pdfIn PDF document text
    • https://aspit.ro/imagini_ws/xirojatoge.pdfIn PDF document text
    • http://batistar.fr/userfiles/file/67602898435.pdfIn PDF document text
    • https://tspinstruments.com/cache/fck_files/file/pobolujuzivapef.pdfIn PDF document text
    • https://groupunsur4.com/contents/files/jasenibefazudorup.pdfIn PDF document text
    • http://pinxedien.net/upload/files/fuvetetozusuna.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1612f4382a97de---80052256522.pdfIn PDF document text
    • https://www.bussmann-tiefbau.de/ckfinder/userfiles/files/81615014171.pdfIn PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e9da006c40---21867447696.pdfIn PDF document text
    • http://instant-image.net/UserFiles/Site/File/37741681116.pdfIn PDF document text
    • http://jandebruijn.com/uploadimages/files/56058287575.pdfIn PDF document text
    • http://chingyi.tw/userfiles/files/62888639014.pdfIn PDF document text
    • https://hssanesteban.cl/files/xobimime.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=the+longest+alphabet+in+the+worldPDF link annotation