Malicious PDF — malware analysis report

Static analysis result for SHA-256 120b40e65f286926…

MALICIOUS

PDF

60.6 KB Created: 2021-08-12 18:41:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 045a84b8a0904260517950fb465c2dc8 SHA-1: ba2b36b784c07063bbdcf21ce2f4b7197c11ad62 SHA-256: 120b40e65f2869267dc3ae8850db894a2263377701607f6a4f9a8ad24ac02a14
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple external URLs, some of which are hosted on compromised CMS upload directories. This suggests a phishing or malware distribution scheme, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8654

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://capitalclassof1970.com/clients/e/e7/e78cae7b17622b0161c193cbd63f4fd0/File/19082298753.pdf In PDF document text
    • http://caramelitos.sk/files/75383339073.pdfIn PDF document text
    • http://bfr-bialapodlaska.pl/userfiles/file/lelitolilanug.pdfIn PDF document text
    • https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/gg74sn5cnqkginfp7ae83qcr4e/pagolosukuwudow.pdfIn PDF document text
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/8mbbvsr9jcjqq53aah7tmk5jjj/97212499418.pdfIn PDF document text
    • https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/e5fc1950f1c959f5ddd554eaecd63bd0/97780113450.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/15d06a64c383298c063afa4971427499/99962858549.pdfIn PDF document text
    • http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a093a306214---jafita.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a62c73e4558---darusaluleb.pdfIn PDF document text
    • http://ever0036.com/assets/uploads/ckedit/files/20210802071358.pdfIn PDF document text
    • http://gioiacompany.net/images/upload/file/97451930976.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab159c2ddcb---zejapamiwakenupapali.pdfIn PDF document text
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/7d9d3515475dde2558e643bb80d572c9/67250023151.pdfIn PDF document text
    • https://tavcam.com/upload/ckfinder/files/60288827030.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a06e9b3440d---wezesewijuvo.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/n2reurg87g4mmdsltthcpfc8s3/ratovuzebomemaf.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/b530ca5963bcd61f7f647ede0ad478c1/lename.pdfIn PDF document text
    • http://arenabilardo.com/data/_files/26444330441.pdfIn PDF document text
    • http://olsztyntransportmedyczny.pl/userfiles/file/95704779291.pdfIn PDF document text
    • http://lctrading-gmbh.com/ckfinder/userfiles/files/26041761881.pdfIn PDF document text
    • https://kheops-so.fr/ckfinder/userfiles/files/25008556184.pdfIn PDF document text
    • https://livres-d-art.com/ckfinder/userfiles/files/nemidinatevida.pdfIn PDF document text
    • https://ngoctraithaibinhduong.com/uploads/news_file/lufigosov.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=inteligencia+visual+espacial+pdfPDF link annotation

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