Malicious PDF — malware analysis report

Static analysis result for SHA-256 e357901762da4cad…

MALICIOUS

PDF

63.5 KB Created: 2021-07-31 06:18:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 787b0bc25a0bef912172c38029cf2b5f SHA-1: fe019bf30964a87eae0aaf7244b07353e55fea9d SHA-256: e357901762da4cad9837a169117d7f98a1264f4f600c6057a0781e0c4de609ce
174 Risk Score

Malware Insights

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

The PDF contains numerous external URIs pointing to compromised WordPress sites, indicating a link farm designed to redirect users to malicious content. ClamAV detection and ML classification confirm its malicious nature, likely serving as a lure for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9612

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://medvor.ru/uplcv?utm_term=chinese+furniture+los+angeles PDF link annotation
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/54f334324f9da62cb07ab7a88edcb59c/wunulenutazevu.pdfIn PDF document text
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608333c3e553e---xejetuzurujumidije.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/3207adec512e6ed6edc296d26e07ac5c/xagav.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/6lattrs6ru04a13674dpoccqr4/videgutomakiviziwetedalir.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609bd3a13f772---pitavapep.pdfIn PDF document text
    • http://apsencollege.org/test/fckeditor/file/sufodeg.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b908bd49ce9---kidojenalalibarapa.pdfIn PDF document text
    • http://master-sign.ru/ckfinder/userfiles/files/degikikujuladovivirogad.pdfIn PDF document text
    • https://creteotels.gr/FCKeditor/userimages/file/23222375878.pdfIn PDF document text
    • http://dlikefulproductions.com/clients/875850/File/77496395236.pdfIn PDF document text
    • https://nolimitscenter.be/peausitive/images/FCKeditor/file/lelopetoseduwibodorilemi.pdfIn PDF document text
    • http://modnyi-buket.ru/uploads/files/mirobonekuniw.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a642a2063f7---josodepobujinalasuxepin.pdfIn PDF document text
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/d42808ddbe75af5b5b9b1d2325a75c26/78844586662.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/hi6dti9ss27n62aooppakgtq97/42995847741.pdfIn PDF document text
    • http://refah4ter.info/basefile/hotelrefah4terir/files/nodofesugem.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/1607e8957b7fb7---38083744135.pdfIn PDF document text
    • http://permianhighschool1970.com/clients/e/ef/efee9fcbc667252fc4b649c8163d3733/File/posazobuxaxosavabi.pdfIn PDF document text
    • https://sieompaysdebray.fr/lesiom/txt/imgadmin/file/13456687620.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607b1bfc48aea---wexisi.pdfIn PDF document text
    • http://gadkowski.pl/repository/filemanager/file/81631813306.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085e98aaabe8---vafogimosepipo.pdfPDF link annotation
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b80751adb8---lalodumatofixujeme.pdfIn PDF document text
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3a063e94c4---53415066630.pdfIn PDF document text