Malicious PDF — malware analysis report

Static analysis result for SHA-256 be9f8a710bad0739…

MALICIOUS

PDF

60.9 KB Created: 2021-09-20 18:01:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 05a92fa79088871bd954f536bcc5bb0f SHA-1: 707afcfea123c3d60b5c2834afd41c4eb0a4163d SHA-256: be9f8a710bad07392ae08fde709dd508f83f46dbb0dd078b45ffb2e7460dbc27
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a link farm pointing to various PDF files hosted on multiple domains, including compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading further malware. The presence of numerous links and the use of disposable or compromised hosting suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8776

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://reniuved.it/file/25684272466.pdf In PDF document text
    • http://topp.pl/_topp/file/solugi.pdfIn PDF document text
    • https://hotnews.md/upload/userfiles/files/rimupebodusilufizu.pdfIn PDF document text
    • http://app0.linkeo.it/ckfinder/userfiles/files/6652226666.pdfIn PDF document text
    • http://onthebroadway.com/CPD/adminpanel/upload/file/65213646163.pdfIn PDF document text
    • http://www.mueblesgamez.com/ckfinder/userfiles/files/julezazujekuxiguxomuf.pdfIn PDF document text
    • http://18554080.com/userfiles/file/76796491448.pdfIn PDF document text
    • https://iphone-odklep.si/vsebina/pumotiwomavibemaforene.pdfIn PDF document text
    • http://shopgraeagle.com/ckeditor/uploads/files/62266995225.pdfIn PDF document text
    • https://qian-ho.com/upfiles/editor/files/28788710380.pdfIn PDF document text
    • http://centromp.it/userfiles/files/xafikol.pdfIn PDF document text
    • https://pensiuneavalentina.ro/app/webroot/file/fasuboxapagodubofunekas.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613af8e971d9f---soxolimej.pdfIn PDF document text
    • http://progettarecasa.com/userfiles/files/23413903838.pdfIn PDF document text
    • https://drnanemilk.com/tctt/sites/aaa/file/dixazotedefalujumotad.pdfIn PDF document text
    • https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/e869031ab0cafffa85f2395f1d1b88ab/52333026922.pdfIn PDF document text
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b4f252dff6---savatip.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/64714dc9f249ba7d269197e3c3e4393d/81586165706.pdfIn PDF document text
    • http://kmjmt.com/news/upload/file/2109180951421485908aa5a3.pdfIn PDF document text
    • http://stellarp.com/userfiles/files/tiserosipu.pdfIn PDF document text
    • http://hwangtosidae.com/userData/ebizro_board/file/10754252590.pdfIn PDF document text
    • http://lamardaegu.com/upfile/user/file/47414543168.pdfIn PDF document text
    • http://korea-labels.com/ckfinder/userfiles/files/11661410213.pdfIn PDF document text
    • http://originalcheck.it/public/img_admin/file///62627649123.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=khakee+full+movie+download+720p+2004PDF link annotation

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