Malicious PDF — malware analysis report

Static analysis result for SHA-256 f57f7586cff587f0…

MALICIOUS

PDF

71.3 KB Created: 2021-09-14 05:08:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: b876198c7ed5d274aa7442fd24687c25 SHA-1: cac7dfc4cec7a473b37a905cc87aa39c37f43d31 SHA-256: f57f7586cff587f083e50aafff2456433f44d9391a9de90d0abd2621a691f984
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to compromised WordPress upload directories or are part of a link farm hosted on disposable domains. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution through these links. The document body is heavily obfuscated and does not provide direct clues to the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5948

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://www.frank-diagn.hu/userfiles/files/zomojakenanugik.pdf In PDF document text
    • http://maidichike.com/upload/files/64407511416.pdfIn PDF document text
    • https://dd-inside.de/userfile/file/paguwezikoko.pdfIn PDF document text
    • https://morganmethod.com/ci/userfiles/files/pubapamix.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161386b3082ec5---64159003755.pdfIn PDF document text
    • https://semangkabiji.com/contents/files/karopepotijowixajojofereb.pdfIn PDF document text
    • https://cobaltinc.org/userfiles/file/vazudukulo.pdfIn PDF document text
    • https://hankilfood.com/userfiles/file/20210901201151.pdfIn PDF document text
    • https://holcom-wd.com/webroot/img/files/18961543795.pdfIn PDF document text
    • http://rydelko.eu/userfiles/file/gubejozizelova.pdfIn PDF document text
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/16135047e15531---20452404850.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/161379dec38b24---tipezugigaluneleguva.pdfIn PDF document text
    • https://techinnsrl.com/writable/public/userfiles/file/19146898114.pdfIn PDF document text
    • https://lacaune.hu/userfiles/file/pelunufebagifepewobi.pdfIn PDF document text
    • https://togeltop.net/contents/files/nozagiporu.pdfIn PDF document text
    • https://ibshospitals.com/userfiles/file/lexisuwejavu.pdfIn PDF document text
    • http://cuathepvangohaiduong.com/images/ckeditor/files/1266150430.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/1613d3a1ddf7b4---zotubesixo.pdfIn PDF document text
    • http://grupposcorcia.it/userfiles/files/nubulosukerux.pdfIn PDF document text
    • http://olympusflights.com/files/files/13960704700.pdfIn PDF document text
    • https://swapnauraan.com/ckfinder/userfiles/files/feluxus.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613feaaf1c470---88109097655.pdfIn PDF document text
    • http://hotelbellevuepalermo.com/userfiles/files/25002753377.pdfIn PDF document text
    • https://mimpidia.com/contents/files/vokawibodumi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=phrasal+verbs+with+highPDF link annotation

Open this report in the interactive analyzer, or submit your own file for analysis.