Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c625426eb1f4339…

MALICIOUS

PDF

57.3 KB Created: 2021-08-18 19:38:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: 75eb565a8eee35693266c9699d91e4de SHA-1: 0afcb5aa93d34719d67d512eb4e81473936d3bc5 SHA-256: 7c625426eb1f43390435a9e835e6f57b9a710df9a0495357c759c8988341556b
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, many pointing to compromised WordPress upload directories, suggesting a link farm designed to redirect users to malicious content. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a phishing or malicious intent. The document body is unreadable, but the heuristic firings clearly indicate a malicious link distribution pattern.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4489

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://pilotcenter.gr/wp-content/plugins/super-forms/uploads/php/files/ihplirq7sromc66i3053j3hcpj/nujadewofuriwepa.pdf In PDF document text
    • https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/eff6eb87c4161daa87723ba1374ee6bf/wenil.pdfIn PDF document text
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/16087f67104920---vinizileduzigagowoxar.pdfIn PDF document text
    • http://medicaldistri.com/ckfinder_files/files/96614476082.pdfIn PDF document text
    • http://jlsxjy.com/right/UploadFile/file///2021072304445573499.pdfIn PDF document text
    • https://valubil.com/public/uploads/cms_file/cms_files/busabawov.pdfIn PDF document text
    • https://swift-tw.com/lcc/upload/files/23214084568.pdfIn PDF document text
    • http://orbitsecurity.qa/pro_mvp_tech/uploads/file/besabakur.pdfIn PDF document text
    • http://kursadowicz.pl/Upload/file/vepefubim.pdfIn PDF document text
    • http://xn--rssx31a7tec6p.com/upload/userfiles/files/20210728055131.pdfIn PDF document text
    • http://sanmarinreunion.com/clients/c/c0/c0747301521b2fcd71a0106c9132c7e7/File/tuguwubalutoxoniw.pdfIn PDF document text
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/d19f47874d48525e4c862e0314e59a40/pesurebevof.pdfIn PDF document text
    • http://wildpflanzen-planung.de/file/24827770303.pdfIn PDF document text
    • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a68bbd9ab2c---37650477702.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071ed36e12a6---napisojukowesuwosip.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aeb9595cef7---50751135940.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ac93b016f4c---47198709274.pdfIn PDF document text
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/v1h6qui2vldqdqie4q0k543blh/sepovodukunowuviwusotona.pdfIn PDF document text
    • https://hkparkkonutlari.com/image/files/51856635396.pdfIn PDF document text
    • http://parkettes.org/clients/b/b3/b30d687fb0e6fb0c44210170e51784d9/File/surerezolasi.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aa54d5e1742---99438958913.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608612b2bc423---feriniwozolexudarijebizob.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e01e4fb511d---fogabaw.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160943b0a4b07f---9620410531.pdfIn PDF document text
    • http://vector-mebel.ru/uploads/files/zafawomefuzevav.pdfIn PDF document text
    • http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160748b3965911---72023271709.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=semillas+de+minecraft+con+aldeas+1.16.5PDF link annotation