Malicious PDF — malware analysis report

Static analysis result for SHA-256 573c0d2ba487133b…

MALICIOUS

PDF

51.5 KB Created: 2021-09-27 18:46:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: a102e9dfca83a73e67282fc83f7df6b5 SHA-1: 98120ddc0cfa2f2c6f76e62eee08c5d6cffadab2 SHA-256: 573c0d2ba487133b0a7c926cbcb9021b17eabfc29199f901be5f8f3d12e96088
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and ML classifiers, and exhibits characteristics of a link farm. It contains numerous external URIs pointing to various domains, many of which appear to be compromised WordPress sites or disposable hosting. The presence of 'utm_term' parameters suggests a phishing or spam campaign aimed at driving traffic to specific content, likely malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6678

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://cructi.ru/uplcv?utm_term=dream+league+2017+hack PDF link annotation
    • https://jbdclothiers.net/emailer/userfiles/file/bariguwipajo.pdfIn PDF document text
    • https://drticket.ir/basefile/drtiketcom/files/38636501244.pdfIn PDF document text
    • https://casalindasbakery.com/ckfinder/userfiles/files/nedaz.pdfIn PDF document text
    • https://sherwoodchamber.org/ckfinder/userfiles/files/50177844533.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/4e2f24a9ea1b398e450e269464136ad4/tarefikenipowajiritemopil.pdfIn PDF document text
    • http://timnhanhonline.net/upload/files/95310816869.pdfIn PDF document text
    • http://myucmas.com/userfiles/file/62365761906.pdfIn PDF document text
    • https://www.sacict.or.th/ckfinder/userfiles/files/19149884893.pdfIn PDF document text
    • http://sin-hua.org/userfiles/87953688515.pdfIn PDF document text
    • http://energy-labels.com/userfiles/file/79419571288.pdfIn PDF document text
    • https://lmcmanager.com/ckfinder/userfiles/files/39248743308.pdfIn PDF document text
    • https://bike-accessories.supersites.gr/content/ckfinder/files/11972069121.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/9106a99bd107bb4f943eaa804ca5d39a/89238194632.pdfIn PDF document text
    • http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16143cc196b0f3---72935163427.pdfIn PDF document text
    • http://standartbio.com/fckfiles/file/30718596077.pdfIn PDF document text
    • http://zxpgw.com/userfiles/file/2805311146.pdfIn PDF document text
    • http://snuhonors.com/userfiles/file/bawuzalez.pdfIn PDF document text
    • https://biodent.ro/m4fm_files/m4news/ck-uploads-files/tuniluvupepu.pdfIn PDF document text
    • https://getracemirates.com/userfiles/files/91175965399.pdfIn PDF document text
    • http://caigeshi.com/uploadfile/file/2021090410561273499.pdfIn PDF document text
    • http://hasadtemizlik.com/upload/file/konusanitapirijasexaz.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/161369370d8eba---tusapotijak.pdfIn PDF document text
    • http://sungwoo-n.com/userfiles/file/77844300411.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16150b14225ee3---54581971913.pdfIn PDF document text
    • http://ekonopuntos.com/campannas/file/jusexokimaxulajivisapuref.pdfIn PDF document text
    • http://kimhoatra.com/upload/fckimagesfile/livetilogil.pdfIn PDF document text

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