Malicious PDF — malware analysis report

Static analysis result for SHA-256 6987dde6f400f668…

MALICIOUS

PDF

48.3 KB Created: 2021-09-12 22:11:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: e075cc945d34a0b0b36cc73d1e05d635 SHA-1: d2b45b9eeec234a12173d64d117e7b09df147922 SHA-256: 6987dde6f400f668c25629328bf931b0f0b07302f2dafcd052fd14af59b76d97
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a link farm directing users to multiple websites, many of which are hosted on compromised CMS platforms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body is heavily obfuscated and unreadable, providing no direct content-based clues.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6237

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 http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/16132f71b6cf05---kosopifusebexolug.pdf In PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/e7b64e302522095268aa795130667589/tijizigikomifejuj.pdfIn PDF document text
    • https://medarbindia.org/ckfinder/userfiles/files/kajonegasibasilew.pdfIn PDF document text
    • https://essaidafm.com/uploads/FCK_files/file/11810511554.pdfIn PDF document text
    • http://md-servicios.com/userfiles/file/farokulesefinezuzab.pdfIn PDF document text
    • https://smsenerji.com/resimler/files/tumerotepixudu.pdfIn PDF document text
    • http://logistra.fr/ressource/site-image/files/87149923539.pdfIn PDF document text
    • http://xn--c1aejbdnke.xn--p1ai/admin/ckfinder/userfiles/files/55498844586.pdfIn PDF document text
    • http://boothbayharborshipyard.com/userfiles/file/bagekegidurasikapotape.pdfIn PDF document text
    • https://oriental-kitchens.com/userfiles/files/2401299952.pdfIn PDF document text
    • https://landbondcorten.com/attachment/file/efaacee0d7ae2fa01d4555c8b93a5ffe.pdfIn PDF document text
    • http://agedwedfjtj.pretty-match.com/upload/files/83615187581.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f003024ace---80747408719.pdfIn PDF document text
    • http://dpsszczytno.pl/photo/file/fadozevuvitefezobef.pdfIn PDF document text
    • http://studiotrusso.it/userfiles/files/9535374284.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f0251e44fb---ditatuzanadifakag.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/11c58f793094a126e14aa15ec9ecab43/25855162173.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/dajs7d87qsft03v7j5o34rp44s/27680219867.pdfIn PDF document text
    • http://gutachterbewertung.de/userfiles/file/96551479823.pdfIn PDF document text
    • http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/dh1o3rpep4elpbn876sua82q8t/19570662940.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ddb0dadb7d---naxawitebokezusetened.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613acf06576dd---durazidonasikuk.pdfIn PDF document text
    • http://snsi.jp/image/news_file/49723643559.pdfIn PDF document text
    • http://aspbae.org/userfiles/file/48609977713.pdfIn PDF document text
    • https://turdv.ru/SITE/files/editor/file/73286688963.pdfIn PDF document text
    • https://www.bevillelecomte.ovh/ckfinder/userfiles/files/sawipaturarerovamemoxij.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=1234+movies+online+bollywoodPDF link annotation

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