Malicious PDF — malware analysis report

Static analysis result for SHA-256 13afa23c4d96beb5…

MALICIOUS

PDF

46.9 KB Created: 2021-09-28 10:56:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 38746c111ec81484b7c16efea4b6823f SHA-1: a3c6dd910236c38919f3b6e5fe9ca54f0ace5557 SHA-256: 13afa23c4d96beb5d3272113c1aee4fa38eea5b4a376e3d94994ecd98c65cf73
182 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The sample contains embedded JavaScript, which is a common technique for executing malicious code within PDFs. It also features a link farm pointing to various URLs, including one that uses a raw IP address, suggesting an attempt to redirect the user to a malicious site. The ClamAV detection and ML classifier further support its malicious nature, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5801

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://rtvpuls.com/ckfinder/userfiles/files/daxajigateler.pdf In PDF document text
    • http://toanthinh.vn/webroot/img/files/wotogurewijete.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/161409954ad92c---dawopop.pdfIn PDF document text
    • http://harrodsrentacar.com/public_html/userfiles/file/mapudimeleze.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/16130e4dbb96d7---50001683885.pdfIn PDF document text
    • http://www.thegrcinstitute.org/app/webroot/js/ckfinder/userfiles/files/dazekikesavefumeru.pdfIn PDF document text
    • http://tycoonmedical.com/userfiles/file/81656749353.pdfIn PDF document text
    • http://csptech.net/admin/userfiles/file/67028804977.pdfIn PDF document text
    • http://inarchengineering.it/userfiles/files/towawakavaxexoxumuja.pdfIn PDF document text
    • http://sushiosushi.com/uploads/files/78651632361.pdfIn PDF document text
    • http://frutapac.es/ckfinder/userfiles/files/sanujububamito.pdfIn PDF document text
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/7i17evtnq7r1chl0f0vjbdq5b0/lelolonujog.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/16145d18656edb---35934102815.pdfPDF link annotation
    • http://wu-pao.com/upfiles/editor/files/98936735331.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613de47bc14b9---tijoj.pdfIn PDF document text
    • http://bfcy88.com/uploads/files/32531409992.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/22246359977.pdfIn PDF document text
    • http://interreg-ipa-husrb.com/downloads/19196387749.pdfIn PDF document text
    • http://vkts.se/userfiles/file/divaninonufeme.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/16144391a2d5e4---ledemopidimus.pdfIn PDF document text
    • http://duepassidalcentro.it/userfiles/files/82509719977.pdfIn PDF document text
    • http://qiuyutv.com/userfiles/files/20210916062945.pdfIn PDF document text
    • http://sarkar.ie/userfiles/file/fumatanezixaxes.pdfIn PDF document text
    • http://aptekarynek.pl/zdjecia/fck/file/lopugizomu.pdfIn PDF document text
    • https://hamzakocakoglu.com/userfiles/file/39826881987.pdfIn PDF document text
    • http://www.pes.edu.mn/ckfinder/userfiles/files/dubokaxitisoxix.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=how+to+move+obb+filesPDF link annotation

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