Malicious PDF — malware analysis report

Static analysis result for SHA-256 7df50ebdbc8ba8f7…

MALICIOUS

PDF

60.9 KB Created: 2021-09-18 02:10:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: d0865ea142b440549455ce15d26a6770 SHA-1: d94bf762b2a2c8cae66915ce7539761f6c082b6c SHA-256: 7df50ebdbc8ba8f7236918b9ea0f8fbd9e5049f421f5e65e6ee9777b4a4dc9d1
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection as 'Pdf.Phishing.Trojan' and ML classifier further support its malicious nature. The embedded JavaScript likely facilitates the redirection or exploitation process.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5046

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=pokemon+rom+hack+emulator PDF link annotation
    • https://securitydm.net/slicice/file/wamedidevi.pdfIn PDF document text
    • https://locktactyuma.com/ckfinder/userfiles/files/debosodikesu.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/161413cc8b0827---74945008335.pdfIn PDF document text
    • http://czernavendeghaz.hu/admin1/file/bujegizalijokeginedijof.pdfIn PDF document text
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/8f167358942b0f4d6e0ed54102e374ea/lenudegudugiwikuvofexe.pdfIn PDF document text
    • http://marathon-gexin.com/Uploadfiles/files/duxusi.pdfIn PDF document text
    • http://azbuka-d.ru/ckfinder/userfiles/files/792116298.pdfIn PDF document text
    • http://bm-shower.com/userfiles/files/733304414.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/72d90628bac2d0d857aa00055982d2c4/luxazo.pdfIn PDF document text
    • http://gramercy-grand.ru/files/file/89667560218.pdfIn PDF document text
    • http://pazzo.jp/js/upload/files/paxavapakinov.pdfIn PDF document text
    • http://e-photo.lv/ckfinder/userfiles/files/muvimofomad.pdfIn PDF document text
    • http://jlm-kg.com/uploads/file/pilojinaseragotujo.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/74c12beb275fac5df5af76af9291a444/11402275688.pdfIn PDF document text
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe29cb064c---716026471.pdfIn PDF document text
    • http://malir-naterac.info/UserFiles/File/nanolovut.pdfIn PDF document text
    • http://tinhdauvietnam.vn/upload/files/34330000391.pdfIn PDF document text
    • https://moulindelarroque.com/userfiles/file/1029664579.pdfIn PDF document text
    • https://qfuse.it/images/uploaded_files/ckfinder/files/1631323673_28ee665cc6.pdfIn PDF document text
    • https://yuanfuconstruction.com/ckfinder/upload/files/73592782929.pdfIn PDF document text
    • http://waycreon.net/bhaskar/yii/upload/files/89073395476.pdfIn PDF document text
    • http://abwingsjanaf.com/uploads/files/22495735811.pdfIn PDF document text
    • http://sql110.com/pic/norazovaxavuxin.pdfIn PDF document text
    • http://www.logomarcanet.com/userfiles/file/xoposodakemusapemerulux.pdfIn PDF document text
    • http://www.sandipmallick.com/fckimages/file/dixisibuvibotizonugo.pdfIn PDF document text

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