Malicious PDF — malware analysis report

Static analysis result for SHA-256 5308c10f8096538a…

MALICIOUS

PDF

62.3 KB Created: 2021-09-16 00:44:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 317fd9ac5dd15c3b78e4d79ed92b9dfc SHA-1: 014f5a967f6336fa83a19b54ea36b8e7bb622c2f SHA-256: 5308c10f8096538a94971453710bf9b3b2bb1f63695e7ae1831d7c23c1812dd1
162 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript, which is a common technique for executing malicious code or redirecting users. The presence of a link farm on potentially compromised or disposable hosting further suggests an attempt to direct users to malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' reinforces the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6040

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://kingsap.com/file_media/file_image/file/1969959099.pdf In PDF document text
    • https://thietkewebseo.com/webroot/img/files/joletusefizu.pdfIn PDF document text
    • https://hw-power.com/uploads/ckfiles/files/613ad58cf3ea6.pdfIn PDF document text
    • http://assushop.com/userfiles/assushop.com/file/51414852241.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/161390d404b233---78569291678.pdfIn PDF document text
    • http://tehnicgaz.eu/files/file/69606536950.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/8483f486c19927e66f64bec053f940ea/88741603344.pdfIn PDF document text
    • http://mebco.ru/images/file/xazujenepekabepitof.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1612eb2049aa24---xuzifuselaxove.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614241adb2fbf---52202721219.pdfIn PDF document text
    • http://edu-soft.ru/site/htmlimages/file/bazefutusogikijosupomudil.pdfIn PDF document text
    • http://crestviewshopping.abwingsmd.com/uploads/files/49827916169.pdfIn PDF document text
    • https://smartcrm.cloud/upload/files/94731544854.pdfIn PDF document text
    • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/1ht3dh0snff0lof5kp9b1svct1/44893171633.pdfIn PDF document text
    • https://uroci-kursove.com/userfiles/file/72556652293.pdfIn PDF document text
    • https://fpcofmacon.com/nbloom/fckuploads/file/tinugozekotosewetubaxirez.pdfIn PDF document text
    • http://eros-arena.com/eros/userfiles/file/79570999235.pdfIn PDF document text
    • http://rama-sp.com/rama/webroot/js/ckfinder/userfiles/files/92291129008.pdfIn PDF document text
    • https://sofahatinh.com/upload/files/87574111392.pdfIn PDF document text
    • http://clinivetmadonnadirosa.eu/userfiles/files/nopepadus.pdfIn PDF document text
    • http://kuppersbusch.hu/userfiles/files/judoligujakuvabilasatal.pdfIn PDF document text
    • http://verduciautodemolizioni.it/userfiles/file/gejatobalire.pdfIn PDF document text
    • http://peak-experience-japan.com/images/blog/file/xoxerisiterovovoninikolak.pdfIn PDF document text
    • http://sten.kr/club/data/userfiles/file/20210912213806.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=best+radio+station+app+for+androidPDF link annotation

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