Malicious PDF — malware analysis report

Static analysis result for SHA-256 94c2c92b7b7fafcf…

MALICIOUS

PDF

51.5 KB Created: 2021-09-28 09:52:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 006a676446646374c768f13185666abb SHA-1: 42e6e460eb47b7c043afb953200b2812930b52c7 SHA-256: 94c2c92b7b7fafcf3cc9a5d2c61d6253c1a5303b6f73ad0a24ca12d867eca744
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier further support its malicious nature, likely for phishing or malware delivery. The document body is unreadable, but the heuristic firings strongly indicate a malicious intent through external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5970

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://laborke.ru/uplcv?utm_term=free+download+qr+code+scanner+for+pc PDF link annotation
    • http://speaklifeiamgreatness.com/files/files/42409030282.pdfIn PDF document text
    • https://zhongzing.com/uploads/files/202109200824379928.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1614e93669d628---11014137888.pdfIn PDF document text
    • https://reazfarah.com/ckfinder/userfiles/files/jikilivowudoxudak.pdfIn PDF document text
    • http://lepixz.com/userfiles/file/52824377905.pdfIn PDF document text
    • http://nuovartea.eu/userfiles/files/bivutaza.pdfIn PDF document text
    • http://zeci.nl/im/image/wobajuseb.pdfIn PDF document text
    • http://5mal4.de/moneyvidya/web/images/userfiles/file/mozawetaziradetazoxaxig.pdfIn PDF document text
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1613e3d07c1976---sudewomisuwo.pdfIn PDF document text
    • http://czernavendeghaz.hu/admin1/file/pomadofuvejafakagotuvi.pdfIn PDF document text
    • http://gruppocinofilomarsalese.com/userfiles/files/44458291325.pdfIn PDF document text
    • http://gadkowski.pl/repository/filemanager/file/dafadovitamer.pdfIn PDF document text
    • http://kerama.altrodesign.eu/ckfinder/userfiles/files/zoxepameluronavovasofix.pdfIn PDF document text
    • http://pusancard.com/userData/board/file/furisovalilusejulap.pdfIn PDF document text
    • https://mimpisiluman.com/contents/files/zigawelevufidak.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161319ced4c75b---52308778928.pdfIn PDF document text
    • https://mobilaide.com/upload/editor/file/roxelesirupenilok.pdfIn PDF document text
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/cddecefcfcf08037fc079cabf12f324d/wixumaden.pdfIn PDF document text
    • http://sitoad.com/bbqjoekey/files/202109062203159023.pdfIn PDF document text
    • http://imoroz.by/upload/file/81026461939.pdfIn PDF document text
    • http://ampletrekking.com/userfiles/file/fifevoxitosezotefi.pdfIn PDF document text
    • http://showpalmedical.com/userfiles/nurifiwapirunewin.pdfIn PDF document text
    • http://www.humillacionyestrella.org/ckfinder/userfiles/files/rafutad.pdfIn PDF document text
    • http://185.33.116.145/~acus01/upload/files/kugerimo.pdfPDF link annotation
    • https://thietkewebseo.com/webroot/img/files/butidipuxuna.pdfIn PDF document text
    • http://moestuinwebshop.nl/userfiles/file/bejolinudaz.pdfIn PDF document text
    • http://monikaknoblochova.com/userfiles/file/gupodazebubamef.pdfIn PDF document text

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