Malicious PDF — malware analysis report

Static analysis result for SHA-256 46d9571e36574b3f…

MALICIOUS

PDF

131.8 KB Created: 2021-07-19 05:51:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 34e43bf9974028cede19645a40f74a7f SHA-1: c98d11e995618e4ab34421e79a4b7255a20eaf21 SHA-256: 46d9571e36574b3f3c40361a0ad996c25bf0261a5bd5428392c1b58811453243
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, a common technique for executing malicious code within documents. It also features a link farm pointing to multiple distinct hosts, many of which appear to be compromised WordPress sites, suggesting an attempt to obscure the final destination or leverage legitimate infrastructure for malicious purposes. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious classification.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4607

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://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608873065e55f---davagefaziwugubetus.pdf In PDF document text
    • http://wolfroccatiassociati.it/userfiles/files/76966441944.pdfIn PDF document text
    • http://baohanhranghm.com/upload/img/files/ladanoxa.pdfIn PDF document text
    • http://lakehighlandsrw.org/clients/863582/File/wobotubozafa.pdfIn PDF document text
    • https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/om9p3l8tmpd37odvochoj5krj3/86074736737.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/7a101d44b426d73a0500494a1d13cf17/85794226928.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/160bc5bd6bacce---53815670900.pdfIn PDF document text
    • http://libron.pl/fckupload/assets/file/vivina.pdfIn PDF document text
    • http://apsencollege.org/test/fckeditor/file/kanabovagexexakozulexoj.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16093e50139f05---5710265807.pdfIn PDF document text
    • https://texigo.tw/upfile/files/2021/07/04/8128181171.pdfIn PDF document text
    • https://bloomland.com/sites/bloomland.com/files/xevevavozipo.pdfIn PDF document text
    • http://www.asap-recruitment.net/upload/file/penexeliwusesutejavalaj.pdfIn PDF document text
    • https://earplighting.com/wp-content/plugins/super-forms/uploads/php/files/b16ac3927e7834d678ea1f764085b61b/maxejanik.pdfIn PDF document text
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1609be43c00156---xisuvejanumameroj.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/of8ohl3iimlo6qat66180crtm5/52292383697.pdfIn PDF document text
    • http://odessahighschool1970.com/clients/7/70/70263b1be1b93b62200e198143f59f20/File/verilonamatofarumagovuped.pdfIn PDF document text
    • https://truck-diagnostic.ru/wp-content/plugins/super-forms/uploads/php/files/ebf6516221084bdfa08ffadd014160a7/jopefajewerubarerufopiki.pdfIn PDF document text
    • https://circolodelpistone.ch/userfiles/file/tutavenivuzosopisepudek.pdfIn PDF document text
    • http://citranco.com/users/files/setoxofererepodito.pdfIn PDF document text
    • http://brkvinc.com/userfiles/file/35576412305.pdfIn PDF document text
    • http://veterinariacasettamattei.it/userfiles/files/puputodogafewazikogijum.pdfIn PDF document text
    • https://moraure.net/js/ckfinder/userfiles/files/kojudaf.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081d43c09481---fediwadowex.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=electronic+communication+systems+by+blake+solution+manual+pdfPDF link annotation

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