Malicious PDF — malware analysis report

Static analysis result for SHA-256 95ddcc1cbd7a97da…

MALICIOUS

PDF

62.0 KB Created: 2021-10-07 05:06:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: f47ef61a8a2f7b51d7742b443f6d7b06 SHA-1: cece20573d037762c586c9efe08fb2aaeb4103e8 SHA-256: 95ddcc1cbd7a97da28be95995bcb92a6bf3d9f905ff639cf452c7c358521ec17
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to a variety of domains, many of which appear to be compromised or disposable hosting. The 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics indicate a pattern of using such sites to host or link to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8923

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://catamma.ru/uplcv?utm_term=bloom%27s+taxonomy+geometry+questions PDF link annotation
    • http://cityclick.it/userfiles/files/zibosawaporovutafajaba.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16133bc4ab0bf3---37441312161.pdfIn PDF document text
    • http://kielcenoca.pl/files/file/27941115651.pdfIn PDF document text
    • https://apra.pl/files/file/67641311060.pdfIn PDF document text
    • https://cosmopolitanhotelbg.com/uploads/wysiwyg/files/lunorexatob.pdfIn PDF document text
    • https://permargi.com/files/galeria/files/90426413975.pdfIn PDF document text
    • http://kozszemle.hu/uploads/files/76886142847.pdfIn PDF document text
    • https://hankilfood.com/upfile/files/37708185799.pdfIn PDF document text
    • http://phaptangpgvn.net/app/webroot/upload/files/14174585553.pdfIn PDF document text
    • http://scamps.biz/userfiles/file/13535181104.pdfIn PDF document text
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139eb8d329bf---kawivani.pdfIn PDF document text
    • http://agnieszkapawlik.com/userfiles/file/wakeperemafepuregexam.pdfIn PDF document text
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614194aacaefa---sagex.pdfIn PDF document text
    • http://tongrentangthai.com/UserFiles/file/45590183995.pdfIn PDF document text
    • https://swapnauraan.com/ckfinder/userfiles/files/wedut.pdfIn PDF document text
    • http://z500.si/files/vekofutape.pdfIn PDF document text
    • https://kaptenhoki.org/contents/files/98773153159.pdfIn PDF document text
    • http://mmckno2010.zkosuchdol.info/files/25212242165.pdfIn PDF document text
    • http://kondicionery-dzerzhinskij.ru/upload_picture/file/mejolixupiwi.pdfIn PDF document text
    • http://tribo.kz/userfiles/File/zefowu.pdfIn PDF document text
    • https://luyenthitoeic.info/userfiles/file/21135774056.pdfIn PDF document text
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615800a73ef86---35650356321.pdfIn PDF document text
    • http://emeraldcovepartners.com/_data/images/file/nadikakaniwutenominasozib.pdfIn PDF document text
    • https://sangolongphuong.vn/longphuong/news/files/wevusesexasivokexib.pdfIn PDF document text
    • https://termoformat.md/img/files/87742343317.pdfIn PDF document text

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