Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a038439e9ed048b…

MALICIOUS

PDF

56.8 KB Created: 2021-09-02 15:51:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: cc1820e2237f99f5fee938728568d8dc SHA-1: 04f2679a4150ace33a5efbc1a076e6cf3959583b SHA-256: 6a038439e9ed048b026e423daf74cb86d7d3d21b91e9fbe749e75694ad87a6f2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm directing users to various external websites, some of which are hosted on compromised CMS platforms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7058

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://xn--b1akwe.xn--p1ai/userfiles/file/paporufi.pdf In PDF document text
    • https://used-machinetools.ro/app/webroot/files/userfiles/files/wogizefepurezite.pdfIn PDF document text
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16097a3e32c78f---domudebewegogozame.pdfIn PDF document text
    • https://fsreloading.com/userfiles/files/48981417629.pdfIn PDF document text
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/1db50054a707eacb1c02ab137f6c71bf/79003869041.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9c9ed2062---25038124199.pdfIn PDF document text
    • https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/dkjqa2gjqjjovc7r2lece17aef/89121600943.pdfIn PDF document text
    • http://vincitydata.com/uploads/ckfinder/files/vukikeziruves.pdfIn PDF document text
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607399f800601---bibinigazi.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609fe58ee6ecf---52312098445.pdfIn PDF document text
    • http://bjdfszwy.com/filespath/files/20210802211548.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d51b8d1a2f---niwutoredudunuvot.pdfIn PDF document text
    • http://imssp.by/data/images/fxeditor/file/46109791089.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/t4l1ourgm5p7noruq74q2d0dj2/wezag.pdfIn PDF document text
    • https://people11people.com/uploads/File/gakiripebimizixu.pdfIn PDF document text
    • http://seanmore.com/userData/board/file/83658678344.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa11a59ab23---53894441733.pdfIn PDF document text
    • http://grandviewgroupresort.com/upload/files/buzitatudunov.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ed57de99f4---jipixebizoputitiko.pdfIn PDF document text
    • http://ingpoggi.eu/userfiles/files/gagipikubebesolilelim.pdfIn PDF document text
    • https://tyeetomsfishing.com/userfiles/file/jesaw.pdfIn PDF document text
    • https://centrosteadycam.it/wp-content/plugins/super-forms/uploads/php/files/9311cf253beb4cf0328f01617c04In PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=endoscopic+ultrasound+pdfPDF link annotation

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