Malicious PDF — malware analysis report

Static analysis result for SHA-256 6901116155cc948c…

MALICIOUS

PDF

55.8 KB Created: 2021-07-28 08:52:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: d3f51899713de7afa54ef86b738af181 SHA-1: a5a22c2e09bc0462af72d08cb772e8893c33a033 SHA-256: 6901116155cc948c51ea448badaa8c6e0bdc37f643368f7584fe3d6d9ec852fe
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple compromised WordPress upload directories and other disposable hosting sites. This pattern is commonly used for phishing or to distribute further malware payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9446

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://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/1028c26a332d653d23b15e8a146919a3/71822189453.pdf In PDF document text
    • https://sesconbs.org.br/ckfinder/userfiles/files/24934807488.pdfIn PDF document text
    • https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a98c296826a---wigizegebudod.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/pazataxebaxe.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c2bdabfc43---migovaferuwabutojaw.pdfIn PDF document text
    • https://sanipacific.com/attachment/file/19696450546.pdfIn PDF document text
    • http://bryanhigh78.com/clients/72554/File/saxip.pdfIn PDF document text
    • http://wittlich-luexem.de/userfiles/file/25641092539.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/160a2f520809f4---gikudedusoneloxoku.pdfIn PDF document text
    • https://bimetoor.com/basefile/bimetoorir/files/zurovaj.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609dd79ee1739---domonojiboromo.pdfIn PDF document text
    • http://www.biotanika.pl/upload/file/rinakonejonas.pdfIn PDF document text
    • https://mariellatriolo.it/public/file/pojabumaketa.pdfIn PDF document text
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/d7d3f6b0190227e01d80d4acc2fb75de/12090438892.pdfIn PDF document text
    • http://donateagift.eu/userfiles/file/88063174458.pdfIn PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/b606dda0252dff96b503bfba30e9d70a/88766677702.pdfIn PDF document text
    • https://rosycaffe.com/file/fojagilolasavirepomon.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/31dc6d6a7191d538f65580de78d3f298/nekajimunugovovipixubozax.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160d741892b6e8---zuxadixi.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/n8vjbujv3gp264ubo96mccct25/defupiledazagap.pdfIn PDF document text
    • http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608395675a0In PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=what+are+the+12+deadly+sinsPDF link annotation

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