Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0f8de2f9abd8dc2…

MALICIOUS

PDF

62.5 KB Created: 2021-09-04 20:22:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: ab314ddf53c3368aa5d31b82c0dbdb48 SHA-1: 9069d23aa9dc7e6644f19d05e484daca8a752a03 SHA-256: e0f8de2f9abd8dc24db5cd0f3a3bf1124fd41b8af1e03f59ac919c10cda80f5e
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and numerous external URIs, many pointing to compromised WordPress sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to redirect users to phishing sites or download further malicious content. The presence of embedded JavaScript suggests an attempt to execute code within the user's browser.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5895

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://philabc.ru/uplcv?utm_term=toxemia+of+pregnancy+pdf PDF link annotation
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/160af99e927f94---33757416092.pdfIn PDF document text
    • https://deedpoll.sg/wp-content/plugins/super-forms/uploads/php/files/b18ef0982e2e942f454a99f0b080f90a/82997944467.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0cdcc2f215---92615240650.pdfIn PDF document text
    • http://labmansour.com/app/webroot/js/ckfinder/userfiles/files/35621200308.pdfIn PDF document text
    • https://tonymusic.se/UserFiles/files/99420939382.pdfIn PDF document text
    • http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/049b3b8710745efb34b4b482cb611bde/46791642102.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608092915f350---zusumuxaranelog.pdfIn PDF document text
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/16084d411ec409---1486819039.pdfIn PDF document text
    • http://whitebearlakeclassof1970.com/clients/0/05/05755deafc47004aae723e515cf08a6f/File/73556023372.pdfIn PDF document text
    • https://terminal.hr/userfiles/file/69360362330.pdfIn PDF document text
    • https://blugarden.eu/file/95494645491.pdfIn PDF document text
    • https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e5dcf0e50fd---furovuzudo.pdfIn PDF document text
    • https://webmenuplus.com/images/file/24090758724.pdfIn PDF document text
    • http://pate4me.com/userfiles/file/15029332124.pdfIn PDF document text
    • https://12shio2.com/contents//files/bedugevoxewabigugibefigo.pdfIn PDF document text
    • http://modnyi-buket.ru/uploads/files/90343386957.pdfIn PDF document text
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1611734d09b40f---vuwaximuvilomu.pdfIn PDF document text
    • https://principesgs.com/userfiles/file/88439489438.pdfIn PDF document text
    • https://daotaolaixesontay.com/uploads/file/89828812993.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/214c2d11423f20e83cafec125bcde9c8/55346362656.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/097e0238ff3d04ef080c52241f9f964a/86468909108.pdfIn PDF document text
    • https://debcopharma.com/userfiles/file/78020200518.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085c362bb3ab---21322609344.pdfIn PDF document text

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