Malicious PDF — malware analysis report

Static analysis result for SHA-256 4692f24800c825ea…

MALICIOUS

PDF

58.7 KB Created: 2021-07-02 14:01:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 0e4303852c1eced3a8975c579fe41598 SHA-1: 0d45c862057b813d61cd7ea81da91c1f20c7b30e SHA-256: 4692f24800c825ea65dfd04ed86753d61a9283b85daad5dde090fe8890a9b42a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs that point to various websites, some of which are hosted on compromised CMS upload storage. The presence of these links suggests an attempt to direct users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6735

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 https://philabc.ru/uplcv?utm_term=best+exercise+to+build+upper+chest PDF link annotation
    • https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/vp2q2r59eimnj4i7v8fufbf1sv/molidunana.pdfIn PDF document text
    • https://bywuf.org/upload/editor/files/87926424106.pdfIn PDF document text
    • http://kimbuunguyen.com/uploads/userfiles/file/tuzixedikugiritifavibol.pdfIn PDF document text
    • https://blogsma.com/files/jejanizikisikupojafopuj.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1607d023556d15---59156927307.pdfIn PDF document text
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609347d9cafc0---55514296416.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/41df445db41f5e25a2fb67aefdc29dfd/najewegili.pdfIn PDF document text
    • https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/acbb3176910b7b691c34c63ec7039edc/69255783848.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/feguxazisinagalojadekeruk.pdfIn PDF document text
    • http://morethancars.nl/uploads/edytor/file/71682190910.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/160da8a9aa4c3a---vewukuwigolomafimekewemu.pdfIn PDF document text
    • http://circolosilverblufitnessclub.eu/userfiles/files/82607886574.pdfIn PDF document text
    • https://amadesafar.ir/basefile/amadesafarir/files/nezoxozasamobonozoreji.pdfIn PDF document text
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd29ee5803---36659131934.pdfIn PDF document text
    • http://orgue-chantepie.info/FCKeditor/upload/file/fiperaxibewumapowezuraru.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2446919282---kuromi.pdfIn PDF document text
    • http://liyangah.com/Upload/file/3701477291.pdfIn PDF document text
    • https://wills.sg/wp-content/plugins/super-forms/uploads/php/files/6035e3e3a4baeb57a73d2f5b28b0afb5/98330696925.pdfIn PDF document text
    • https://gdr.co.il/wp-content/plugins/super-forms/uploads/php/files/e0ad4717a291b90fbfa54744a39441bb/tifibekizogitamegixa.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1607998b5ed13b---53467252372.pdfIn PDF document text
    • http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/4f44c8ce4faf8ca3746b2cadcf399225/90824462946.pdfIn PDF document text

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