Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8210ff672ac6ee1…

MALICIOUS

PDF

49.8 KB Created: 2021-09-20 13:43:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 6fb278e65984e15dd9d5237907649b79 SHA-1: 5e08c9c0f8f076a1ef558804c76b38d25ba1ec95 SHA-256: a8210ff672ac6ee136556d23e120209346c2554fb7795b76ca8ef6ff15ece1f8
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs pointing to external, potentially malicious sites, and is flagged by multiple heuristics including ClamAV and an ML classifier as malicious. The presence of external URIs and the link farm heuristic suggest a phishing or malware distribution attempt. No scripts were extracted, but the overall structure and heuristic firings indicate a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6418

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://archism.ru/uplcv?utm_term=can+i+put+widgets+on+my+lock+screen PDF link annotation
    • http://dmhu.eu/uploads/uplib/file/belukegatujaraposutudan.pdfIn PDF document text
    • https://gulamanis.com/contents/files/53953177212.pdfIn PDF document text
    • http://veterinariacasettamattei.it/userfiles/files/23876282842.pdfIn PDF document text
    • http://tacchigroup.com/public/thread/risorse/file/buxenamakunajagiwidijas.pdfIn PDF document text
    • http://radio-salsa.com/php/rs/filesupload/file/36361956148.pdfIn PDF document text
    • http://bamboomfi.com/htdocs/cljr/data/files/rageribubabefafesixu.pdfIn PDF document text
    • https://psychotherapie-coeppicus.ch/upload/file/lumogeme.pdfIn PDF document text
    • http://reicar.dk/userfiles/file/77762129298.pdfIn PDF document text
    • http://wingmanresearch.com/userfiles/files/zepibofowusoxajugi.pdfIn PDF document text
    • http://owop.challengersports.com/ckfinder/userfiles/files/25382593369.pdfIn PDF document text
    • https://lapalettedesarts.fr/gestion/file/17072710262.pdfIn PDF document text
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/161484f05d7c7e---muliruzux.pdfIn PDF document text
    • http://gazosilikatnn.ru/uploads/files/nefibep.pdfIn PDF document text
    • https://arvikabc.com/images/uploadedimages/file/99894060798.pdfIn PDF document text
    • http://bitite.lv/media/txt/122/file/bipumomutupuzubon.pdfIn PDF document text
    • https://tessuno.com/upload/files/6147ee560662e.pdfIn PDF document text
    • http://elazentrale.de/images/uploaded/file/50153513977.pdfIn PDF document text
    • https://almoheetmanpower.com/public_html/userfiles/file/kalenomi.pdfIn PDF document text
    • https://www.shropshirefurniture.co.uk/admin/ckfinder/userfiles/files/gezoditekalaxafanater.pdfIn PDF document text
    • http://www.moyekolodin.com/files/diwirijutivuboxopemawe.pdfIn PDF document text
    • http://arohitourandtravels.com/userfiles/file/xoridijawawotot.pdfIn PDF document text
    • http://gamax-motor.cz/data/dokumenty/69175612952.pdfIn PDF document text
    • http://gma.ge/admin/ckeditor/ckfinder/userfiles/files/95541749289.pdfIn PDF document text
    • https://www.pessin-location.fr/ckfinder/userfiles/files/xenelisaxetusonipagesak.pdfIn PDF document text
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/161300c1b33c06---6428097323.pdfIn PDF document text

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