Malicious PDF — malware analysis report

Static analysis result for SHA-256 c69a9fb2e9e9973d…

MALICIOUS

PDF

59.5 KB Created: 2021-09-10 17:27:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: a1436bdc7ca432db58d18b4fa6d3e23e SHA-1: 9abf506978adef777f54d7b22c4bf735913320e4 SHA-256: c69a9fb2e9e9973dad4f86c0c9935e035f0fd94ec817af50f78fd2aa0ea4235f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript and a significant number of external URIs, many of which are hosted on disposable domains. The ClamAV detection and the heuristic identifying it as a link farm on disposable hosting strongly suggest a malicious intent to redirect users to potentially harmful content. The embedded JavaScript is likely used to facilitate these redirects or further obfuscate the malicious activity.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3485

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://drafthe.ru/uplcv?utm_term=a+beautiful+day+in+the+neighborhood+full+movie+free+online PDF link annotation
    • http://dywin.com/uploadfile/files/vunuw.pdfIn PDF document text
    • http://kovovyroba-nosniky.cz/UserFiles/File/11233056466.pdfIn PDF document text
    • http://gachmenminhchien.com/media/ftp/file/93408981154.pdfIn PDF document text
    • http://citty.org/images/uploads/file/tebupirikujive.pdfIn PDF document text
    • http://louisefarmersmith.com/admin/ckeditor/ckfinder/userfiles/files/64560997657.pdfIn PDF document text
    • http://mnogonomerov.ru/uploads/file/22118660038.pdfIn PDF document text
    • http://ppfi-online.com/userfiles/file/1779256619.pdfIn PDF document text
    • https://mosaicopeoplecorporation.com/ckfinder/userfiles/files/67660947875.pdfIn PDF document text
    • http://auswallendorf.de/userfiles/file/rogaxivikabej.pdfIn PDF document text
    • https://www.l-games.jp/js/ckfinder/userfiles/files/82904158649.pdfIn PDF document text
    • http://imbirimbir.ru/files/tefolonegikuzi.pdfIn PDF document text
    • https://livre-d-art.com/ckfinder/userfiles/files/27282543407.pdfIn PDF document text
    • http://ranch.pl/files/file/lezixusagazosixo.pdfIn PDF document text
    • http://acmemask.com/upfiles/editor/files/zurawiri.pdfIn PDF document text
    • https://feng-shuiworld.com/userfiles/file/16246779938.pdfIn PDF document text
    • http://mabifitness.it/userfiles/files/tavemosigibedowomotiw.pdfIn PDF document text
    • https://greenbins.ca/ckfinder/userfiles/files/61254360109.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16133d141a72bf---sakaloj.pdfIn PDF document text
    • http://dallapietamarchisio.it/userfiles/files/difeburesino.pdfIn PDF document text
    • http://agrostroi-proekt.ru/ckfinder/userfiles/files/mijinibakafasoxunitonoz.pdfIn PDF document text
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161320e37e55b9---90260333569.pdfIn PDF document text
    • https://stcc-sa.com/motakamel/Ups/files/31914357607.pdfIn PDF document text
    • http://xn--9w3b11kh5l.com/ckupload/files/91801467007.pdfIn PDF document text
    • https://plantbiochem.com/ckfinder/userfiles/files/37609650616.pdfIn PDF document text
    • http://gandolfiarchitetti.com/userfiles/files/4842721663.pdfIn PDF document text
    • https://mertlakustika.cz/images/pages/file/murovo.pdfIn PDF document text

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