Malicious PDF — malware analysis report

Static analysis result for SHA-256 d60bae55e4df8244…

MALICIOUS

PDF

44.7 KB Created: 2021-09-14 03:47:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: b69adbce5697798c41f4f0f34e8546ae SHA-1: d3a661d181224a50048592810d686b03498086c8 SHA-256: d60bae55e4df82448a8b27faba7c32e063e1f6e6a7a1663096070215f5a6e0bf
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and numerous external links, many of which point to compromised WordPress sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a non-clustered link farm on disposable hosting, suggesting an attempt to distribute malicious content or phish users. The embedded JavaScript likely facilitates the redirection to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5215

Heuristics 6

  • 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.
  • 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 http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16131f792dc660---24163531451.pdf In PDF document text
    • https://saglamahsapkutu.com/img/editor/image/file/rukixenu.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/dcb5d0c27b91b90c8b4fc39f5822ad88/lasegemerejaz.pdfIn PDF document text
    • https://sadhankendra.org/erc/media/vawexibexir.pdfIn PDF document text
    • http://3xlove.com/uploadfile/file/bijami.pdfIn PDF document text
    • http://vasekurzy.cz/userfiles/file/razinavumosewalikumugoj.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134aef653f2b---26295155909.pdfIn PDF document text
    • https://kccegis.com/upfiles/content/file/20210903010316.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132c97f08f55---noripupomutukap.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/14896593806.pdfIn PDF document text
    • http://espressobuilders.com/app/webroot/files/userfiles/files/zorapuw.pdfIn PDF document text
    • http://sp2wronki.pl/fotki/fotki/file/39258099836.pdfIn PDF document text
    • http://sententtech.com/file_media/file_image/file/44813997610.pdfIn PDF document text
    • http://ambcavallon.eu/userfiles/files/43747483575.pdfIn PDF document text
    • https://toyotaautobody.com/ckfinder/userfiles/files/73820019868.pdfIn PDF document text
    • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/1613363dec8ebe---24133469109.pdfIn PDF document text
    • http://www.logistiekverbeteren.nl/ckfinder/userfiles/files/86533499520.pdfIn PDF document text
    • http://resheto.ru/users_images/fck/file/40475101280.pdfIn PDF document text
    • http://web5gstore.com/Files/files/2172845663.pdfIn PDF document text
    • https://fotoprint.lv/downloads/file/62529949221.pdfIn PDF document text
    • http://meetburgerusa.com/uploads/files/fififeginonatowaroxegodop.pdfIn PDF document text
    • https://congtydaihai.com/upload/files/5557780073.pdfIn PDF document text
    • http://volvo-cars.jp/js/upload/files/73014236737.pdfIn PDF document text
    • http://studiopol.it/userfiles/files/tagefowinigafo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=8k+wallpaper+pc+gamingPDF link annotation

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