Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cff51c7dc31608b…

MALICIOUS

PDF

56.7 KB Created: 2021-07-01 00:56:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 535f3ff6f2588182c1128afdf3432806 SHA-1: fdc06ff40b55fdacfcc83647289594047c95577d SHA-256: 4cff51c7dc31608b843fbf8769c1ceb0e35a33d3c23595e5a17646d6ca7011c0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to redirect users to malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' and the ML classifier further support its malicious nature. No scripts were extracted, but the structure and URL patterns suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5222

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 https://laborke.ru/uplcv?utm_term=roblox+animation+gui PDF link annotation
    • http://akinmedical.com/uploads/file/nesaguwiwukazij.pdfIn PDF document text
    • https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/4eb6ff45da8eb8efff88d928e23bb298/jesajoz.pdfIn PDF document text
    • https://cosalesrep.com/wp-content/plugins/super-forms/uploads/php/files/75f6abdb7fa89b2510c8496d61248426/96384884915.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090f720cbbef---raweviwunakazanilazefoxo.pdfIn PDF document text
    • http://quickvideo.nl/userfiles/file/44966562043.pdfIn PDF document text
    • https://actioncoach.com.my/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8a6e9e761---57157502352.pdfIn PDF document text
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/a8ab4e93a65d981072acea39333d5193/29022731853.pdfIn PDF document text
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/emoqhrudg18s1ujfhvo52f1nu6/5670618678.pdfIn PDF document text
    • https://saam.vn/images/content/file/97909340538.pdfIn PDF document text
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/82e35100f60a3f53c8a757caf92f8a7f/26456139369.pdfIn PDF document text
    • http://atthaya.com/file_media/file_image/file/59350487627.pdfIn PDF document text
    • http://i-daa-wl.de/userfiles/46380460738.pdfIn PDF document text
    • http://www.microsinusectomi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160784bd0c88ab---8496545916.pdfIn PDF document text
    • http://loveperfectionschool.com/upload/file/pusikuwaxekogisuvanibas.pdfIn PDF document text
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/f0uilrvsgue2673l0gvgko1prh/88251290483.pdfIn PDF document text
    • https://specialbrands.gr/wp-content/plugins/super-forms/uploads/php/files/d0a30d42647551c323fbf9796ba0b4ab/muziga.pdfIn PDF document text
    • http://nguoigiupviec99.com/webroot/img/files/65807262412.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/fd7dc4de8bfa3060d55647e9b8b08739/lurimidabazajogupobeju.pdfIn PDF document text
    • http://zae.me/datafiles/file/vejodidasexetuziw.pdfIn PDF document text
    • https://aquafilling.com/userfiles/file/bunasebimudusunuge.pdfIn PDF document text
    • https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/er95in47upt9m45t0r0fi6a5gs/gitapixigarodap.pdfIn PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080bad38fc7b---xituk.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607579764cd9d---95268246295.pdfIn PDF document text
    • http://bungefamily.com/clients/5233/File/54823344735.pdfIn PDF document text
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/db9470d7703ba070665bfb643ea6da4f/92414945155.pdfIn PDF document text

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