Malicious PDF — malware analysis report

Static analysis result for SHA-256 0daa5f3b15fb7691…

MALICIOUS

PDF

51.5 KB Created: 2021-09-15 09:53:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 22f242cc4372cb5442ab824fd268c176 SHA-1: c773dbb503abeb8dc1cc1f2858251f8b9a04fe19 SHA-256: 0daa5f3b15fb7691088ca463e8ff9a3baacc1a5b71675a59e4f6485e808d674f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external websites, many of which are hosted on compromised or disposable domains, indicating a link farm designed for malicious redirection. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6843

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://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/161411467aa9fc---vizefebi.pdf In PDF document text
    • http://seyrimerdin.com/userfiles/file/71740371271.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1614141f112e1e---88634541620.pdfIn PDF document text
    • http://www.ekoforte.com/upload/file/vuzopiledibe.pdfIn PDF document text
    • http://propertiesforrent.com/userfiles/file///5069045352.pdfIn PDF document text
    • https://ladymamashop.com/uploads/files/202109010124434718.pdfIn PDF document text
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/7728c515b04a4e883d1368f5b7bf4467/56526276004.pdfIn PDF document text
    • http://nfc.soo.jp/file/48659960656.pdfIn PDF document text
    • https://casalindasbakery.com/ckfinder/userfiles/files/70944197961.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/161338d9f96d46---16499992080.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613629aec0f89---46662578083.pdfIn PDF document text
    • http://aybar-gallery.com/userfiles/files/kekijurila.pdfIn PDF document text
    • http://www.maderas-navarro.com/ckfinder/userfiles/files/98426993028.pdfIn PDF document text
    • https://bisleriuber.genefied.co/ckfinder/userfiles/files/zemabiwasedakib.pdfIn PDF document text
    • https://sdudyogtechnologies.in/ckfinder/userfiles/files/vawuvozu.pdfIn PDF document text
    • http://doctour.hu/uploads/ckfinder/userfiles/files/12362176660.pdfIn PDF document text
    • http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1612f7f4ea33fd---netupekibelovukarovu.pdfIn PDF document text
    • http://thaimassagemodel.com/ckfinder/userfiles/files/82695483311.pdfIn PDF document text
    • https://brianspradlin.com/userfiles/file/ninuga.pdfIn PDF document text
    • https://lederstuehle-shop.de/ckfinder/userfiles/files/71650555499.pdfIn PDF document text
    • http://sushiosushi.com/uploads/files/60224820908.pdfIn PDF document text
    • http://life-homeshop.com/asset/uploads/files/vasudapipov.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=android+second+screen+usbPDF link annotation

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