Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf15a6701f30e84f…

MALICIOUS

PDF

46.9 KB Created: 2021-09-03 04:48:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 4b1a0ff8f39151a51515ed0fa4b0e9c4 SHA-1: efc84e60fa04c80ea679428f333514e8ab9c82b2 SHA-256: cf15a6701f30e84f4ed57bdd33303294e7fb38e0d5fa1f9267871674016a0354
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by ClamAV as malicious and by an ML classifier. It contains numerous external links, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of PDF_URI and EMBEDDED_URL heuristics indicates the document actively tries to navigate users away from the current context.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6676

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://ketchas.ru/uplcv?utm_term=cask+of+amontillado+full+text+pdf PDF link annotation
    • https://euroroma-bg.org/files/file/xotileluguwido.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/708269091124267840e43fead248a120/40558408602.pdfIn PDF document text
    • https://certifiedcollisionrepair.com/home/cert/public_html/ckfinder/userfiles/files/suxadirovaluzor.pdfIn PDF document text
    • http://daoltrading.com/userData/board/file/28282045872.pdfIn PDF document text
    • https://numen-wow.com/userfiles/cloud/files/buwexi.pdfIn PDF document text
    • http://machinegroup.ru/img/outer/files/fibufigolojopubamizep.pdfIn PDF document text
    • https://tailormade-sales-marketing.com/userfiles/file/rafona.pdfIn PDF document text
    • http://dallapietamarchisio.it/userfiles/files/jokawawobanavelebukodarew.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1607b06cd76fc0---jipupededesozipu.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/eqvugenr3s7f2gja5eoc6hs2s0/pejubobame.pdfIn PDF document text
    • http://xn--knstlerische-biografie-arbeit-lbd.ch/userfiles/files/97449900364.pdfIn PDF document text
    • http://robertoantoniz.com/resources/original/file/zupuxivisedipunagap.pdfIn PDF document text
    • http://biomehl.com/images/content/files/fosemenaxebu.pdfIn PDF document text
    • http://personal.sut.ac.th/chantira/port/ckfinder/userfiles//files/bifagedotafowib.pdfIn PDF document text
    • http://prime42.ru/userfiles/files/rosovujivoguzesi.pdfIn PDF document text
    • http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/05fdd53c6bdcfad1b295fe3ad00f9608/2740043696.pdfIn PDF document text
    • https://cjsc.se/ckfinder/userfiles/files/tiken.pdfIn PDF document text
    • http://captainkillmite.com/uploads//files/202108082149149855.pdfIn PDF document text
    • http://alliance-ic.ru/uploads/file/18913743476.pdfIn PDF document text
    • http://doorsatyrau.com/ckfinder/userfiles/files/64153195896.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/0p5j9i46iadld8ddqgtv193094/93432166294.pdfIn PDF document text
    • http://nessium.fr/userfiles/file/82633299353.pdfIn PDF document text
    • http://studiolaviano.it/userfiles/files/botatasuzasutoz.pdfIn PDF document text

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