Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf03f184947bdbc3…

MALICIOUS

PDF

47.7 KB Created: 2021-07-04 06:31:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 0946a97630be7407245eaa2028cc4d49 SHA-1: 6d3504947582c422520f93156676fe3f5d682c7e SHA-256: cf03f184947bdbc3aff794d1792d1a537fe69a017b7b06dc79406ca6d5f750c6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites. These sites host other PDF files, suggesting a multi-stage attack likely aimed at phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7378

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://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098463d9ec35---rawoxitowotobogiviguzut.pdf In PDF document text
    • https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/cc6e9c5fbd7983fb45a36468108d757f/fuzanavewowajenetedosifi.pdfIn PDF document text
    • http://www.aportecnica.com/imagenes/editor/file/dirole.pdfIn PDF document text
    • https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/6056831c6148b909bc2fec5b1fef2dee/fofadobejab.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/16091bdb901a9a---nezoxob.pdfIn PDF document text
    • https://elmaga.lt/components/com_mijoshop/opencart/image/data/files/89759684641.pdfIn PDF document text
    • https://kawanmto.net/contents//files/kodenejinesamupimuxogogod.pdfIn PDF document text
    • http://119hero.kr/userData/board/file/54556755045.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f2dd65b7d9---rexipeboxuviga.pdfIn PDF document text
    • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/77339mt63ae9bqlu9d8v1h7vvm/zogavasuxuzisilir.pdfIn PDF document text
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a681d723d2f---wamofaredoforeri.pdfIn PDF document text
    • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ade494e527d---63719330047.pdfIn PDF document text
    • http://www.knickmeier.net/images/pageimg/file/48643757754.pdfIn PDF document text
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/5e4b7e1823269596967bea5f9e39c167/14540997040.pdfIn PDF document text
    • http://m2m2design.com/userfiles/vakuzufemiribilulave.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/78b8586339008c5893bf76315a68c043/80470753400.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/1cd5bd98b21ff90ef2b75045d33174bf/nebovewa.pdfIn PDF document text
    • http://progfin.pl/userfiles/file/94551210636.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/vjmm9ilmot3t3ssubohk25lmv6/24534936342.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c3081051ea5---21296866800.pdfIn PDF document text
    • http://rheinmotel.com/userfiles/file/43914617175.pdfIn PDF document text
    • https://efsanepin.com/calisma2/files/uploads/lizipalozivibibizo.pdfIn PDF document text
    • https://www.propertyfilevault.com/wp-content/plugins/super-forms/uploads/php/files/c080cb28d190da2335bc3d27977ef946/56758085067.pdfIn PDF document text
    • http://bortran.com/upload/image/file/20210627032654.pdfIn PDF document text
    • http://sk-uralstroy.ru/uploads/files/93623011280.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=steven+crain+the+haunting+of+hill+housePDF link annotation

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