Malicious PDF — malware analysis report

Static analysis result for SHA-256 bed42a53239faad5…

MALICIOUS

PDF

55.7 KB Created: 2021-06-12 10:53:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 72b8c36f27e54d1aa86a3013de33a2be SHA-1: 3d03465a7031b9bfdd802534ed375ffa7cbdcb53 SHA-256: bed42a53239faad5242d7780545ccec51ef2f075fe95a2fe1454d16c3104c6d2
154 Risk Score

Malware Insights

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

The PDF contains numerous links to compromised websites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The file's structure as a link farm on disposable hosting further supports its role in directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9785

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://coretry.ru/uplcv?utm_term=free+ios+games+no+jailbreak PDF link annotation
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/tuputc97rdnjucera3fsgcjldb/dabuwivab.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/dc46de8b3c4445679216790464d7b8fe/14527955808.pdfIn PDF document text
    • https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/lt5n79rgsm65mfge0biorluqii/zubepisoverul.pdfIn PDF document text
    • https://www.adilaltinsoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160757b5fcfe2b---wexovazapevolomasit.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/64ufiph6u209cqcj12gsi4i8cu/julumonosedaxonudul.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/nv7qle6svonc6j1iqfi56qedl4/mujalijuzegugadakine.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607e829c163f1---rajaxutorana.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2e26b0b09b---madiva.pdfIn PDF document text
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/5d28bb7cb95331203e7815c6ec3e344c/wulotetilomodunejamazeb.pdfIn PDF document text
    • http://usmleworkout.com/files/file/31199790190.pdfIn PDF document text
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160750014a078b---bisadolanobu.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5fadb56d4---84493820712.pdfIn PDF document text
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094bc67dfebe---xudopofimakegofa.pdfIn PDF document text
    • http://apluskleaning.com/admin/images/file/fuziven.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609513e558f4e---25499514781.pdfIn PDF document text
    • https://melz-feu.ru/upload/46591557243.pdfIn PDF document text
    • http://bigpictureresources.com/userfilesbigpicture/file/galivazupujumanuxojo.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/k691sic3m28579ps5943l8ot5n/wosutoxasumewogewo.pdfIn PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/7c8e1d8513124c92aa7c5a310fd829d5/vilirizezoxolafinunif.pdfIn PDF document text

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