Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ea588610fe62d03…

MALICIOUS

PDF

62.9 KB Created: 2021-06-26 09:51:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 4dfb79e0894f58b093cdf0e594264d91 SHA-1: 5d708a64b1c72dd6d0132600564285cc63e8bd89 SHA-256: 4ea588610fe62d03cd2dbb279a95d1fab1e2693529e18652f921edc76af99323
124 Risk Score

Malware Insights

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

The PDF file contains numerous links pointing to compromised WordPress upload storage, indicating a link farm designed to redirect users to potentially malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The file's structure and embedded links suggest an attempt to lure users to external sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4955

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://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/e251cb6942f58ac509574dc10c04aef3/gekegolomizumokejomi.pdf In PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160804341ef047---49742698739.pdfIn PDF document text
    • http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607cd2fa5ebbe---wedekifowuve.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160977b08a7b24---31752179050.pdfIn PDF document text
    • http://animalscipublisher.com/files/upfiles/file/xolututefupe.pdfIn PDF document text
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/4a17f94f7aa44e678791efbc1ec7ef40/27037234845.pdfIn PDF document text
    • https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/6c297660a74354c8455c6273438d79de/joxaxevuga.pdfIn PDF document text
    • http://bjaimama.com/data/upload/2021/06/file/202106061805215308.pdfIn PDF document text
    • http://99hospitalitygroup.com/ckfinder/userfiles/files/simasuzujekimemuzi.pdfIn PDF document text
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/3bg48kgh7hp3qd41g59e9hgbb1/depurugapilixugutilelone.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a3a341a971f---22303498229.pdfIn PDF document text
    • http://susutour.com/userfile/file/kiminodejoxe.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb6b8193fe---kotegejopute.pdfIn PDF document text
    • https://zanhotel.ro/beficientconsultingFiles/file/zipej.pdfIn PDF document text
    • http://kompletucetnictvi.cz/files/file/58527426297.pdfIn PDF document text
    • https://anthonygillant.com/userfiles/file/zonap.pdfIn PDF document text
    • http://am-assets.com/aom/magnolia/userfiles/file/sidiki.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1609b097adbb0e---vuverufotunesiregodogijug.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608c51444b406---tofexelenirawepasiraki.pdfIn PDF document text
    • https://hmanagement.net/userfiles/file/gurolotapedimutog.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac8e29bae58---65514319313.pdfIn PDF document text
    • http://bogelaipigeon.com/upload/file/37900516328.pdfIn PDF document text
    • http://hzkontejnery.cz/ckfinder/userfiles/files/92890794826.pdfIn PDF document text
    • http://babywagen24.de/userfiles/file/97683178563.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=ideal+weight+range+for+heightPDF link annotation

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