Malicious PDF — malware analysis report

Static analysis result for SHA-256 12c73bcada9f19ae…

MALICIOUS

PDF

47.3 KB Created: 2021-09-21 08:32:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 95c5a4ef663e22b50ec9ceda12574233 SHA-1: 00a1b58a10bbbd02c55f451f2c01d9e5e4ad39ed SHA-256: 12c73bcada9f19aeccbe24c96f7995312327e7a354bb7ae19c978229c10e7256
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links pointing to various domains, many of which are likely disposable hosting. The ML classifier and ClamAV detection indicate malicious intent, with the heuristic PDF_SEO_DISPOSABLE_LINK_FARM specifically highlighting the link farm nature of the document. The presence of embedded URLs suggests an attempt to redirect users to malicious sites for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6520

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://irlanc.ru/uplcv?utm_term=plantilla+aplicacion+android PDF link annotation
    • http://paolacaone.eu/userfiles/files/fetogusatokifememegi.pdfIn PDF document text
    • http://fatimaartwork.com/userfiles/file/47478583946.pdfIn PDF document text
    • http://hrdiborice.cz/erucom1/files/files/xetefapojeg.pdfIn PDF document text
    • http://boldogelet.hu/media/35508852661.pdfIn PDF document text
    • http://starfishdowney.com/uploads/files/18414527899.pdfIn PDF document text
    • http://thienlongadv.com/upload/files/kigadumuxo.pdfIn PDF document text
    • http://obrienbuilders.com/userfiles/file/35296876349.pdfIn PDF document text
    • http://fabrikando.com/cmsimple/images/file/vuxirelapixorekewa.pdfIn PDF document text
    • http://commissioncollectionlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wiwofamuriji.pdfIn PDF document text
    • http://xedaphcm.com/luutru/files/33674885173.pdfIn PDF document text
    • http://progettarecasa.com/userfiles/files/pediforuvetexibumuvekapij.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613ded1acc08e---dopizojonimila.pdfIn PDF document text
    • http://arniestribu.com/campannas/file/gevidizodusixodubiweluru.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613d60323ed7d---57785582335.pdfIn PDF document text
    • http://studiomalpocher.it/userfiles/files/49636956438.pdfIn PDF document text
    • http://railwaysrailroads.com/upload_files/files/ximekuwu.pdfIn PDF document text
    • http://casaatlantida.com/userfiles/file///zibogokutepug.pdfIn PDF document text
    • https://marcvandewiele.com/userfiles/file/66561150370.pdfIn PDF document text
    • https://turasmobilya.com/img/editor/image/file/jujujezobadaxuz.pdfIn PDF document text
    • http://studioaba.net/userfiles/files/22084121472.pdfIn PDF document text
    • http://yourtruck.be/upload/ckeditor/file/zisinupoxigugibobakixid.pdfIn PDF document text
    • http://kedehg.com/ckfinder/userfiles/files/kusujafekaril.pdfIn PDF document text
    • http://cw-cut.com/uploads/file/gavirofurefopizinugo.pdfIn PDF document text
    • https://razredna-nastava.net/files/12305954301.pdfIn PDF document text
    • https://weboonline.com/ckfinder/userfiles/files/75040389156.pdfIn PDF document text

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