Malicious PDF — malware analysis report

Static analysis result for SHA-256 c64227fd2cbb95f2…

MALICIOUS

PDF

64.0 KB Created: 2021-09-03 04:17:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 9c696535702a6391c4c478f904f3037f SHA-1: 6620f99ea10d89c66911a682d25af0dc9e3d6170 SHA-256: c64227fd2cbb95f20ce47c6d6a774069826e14077de0650deb0b727badfc58de
124 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV with the signature Pdf.Phishing.Trojan-d2568dad23a94d95. Static analysis revealed it functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and other disposable hosting. These links likely lead to phishing pages or further malware downloads.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3605

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://smidgel.ru/uplcv?utm_term=enlever+filigrane+pdf+online PDF link annotation
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/f4ad4577d66b65996a855babfb26c7cf/43757847305.pdfIn PDF document text
    • http://gancza.pl/userfiles/file/somamavivamofaxu.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/16102d597e6086---zilogugegimen.pdfIn PDF document text
    • https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/bd2bfa25d58656ee9eb79cb8d8766a26/78237873488.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16109bb1309e3c---gepit.pdfIn PDF document text
    • https://braintreeclinics.com/app/webroot/img/files/juxarigezadifumotoj.pdfIn PDF document text
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f8eb411463---4963870182.pdfIn PDF document text
    • http://francescofesta.it/userfiles/files/fivafu.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5768e3216f---50483994522.pdfIn PDF document text
    • http://momsystem.ru/public/file/43976529430.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/9o14f969tv0dap46rv9e6r2m65/jagamufezedojunokejasi.pdfIn PDF document text
    • https://atpl.aero/ckfinder/userfiles/files/82706973739.pdfIn PDF document text
    • https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/e7267f45de657099f6e77c32a374ecce/zifuzopazagelimofobezirop.pdfIn PDF document text
    • http://spearsyounglegacy.com/clients/b/b2/b2c23f164518415ec8f3c1c8d0af542d/File/74730133456.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611a4a505c914---70645863339.pdfIn PDF document text
    • https://robotics-institute.com/wp-content/plugins/super-forms/uploads/php/files/ip9k3rb1pjrn7pik4dascvhtin/xoxodovafosodumixedo.pdfIn PDF document text
    • https://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/f7d884d44dbd721eb681c0b298fcd632/10971040383.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b462737c2da---38984330200.pdfIn PDF document text
    • http://kangs78.com/clients/66216/File/sodoj.pdfIn PDF document text
    • http://alexandercdg.com/clients/36029/File/dakixifanutas.pdfIn PDF document text
    • http://artgraf24.pl/userfiles/file/54082124430.pdfIn PDF document text
    • https://filetorme.com/upload/files/39316270417.pdfIn PDF document text
    • http://nusamulticentralestari.com/Uploads/userfiles/files/85064939504.pdfIn PDF document text
    • http://armanetti.com/images/zilelezudugixazemeker.pdfIn PDF document text
    • http://suachuadienlanhhoaphat.com/hinhanh_fckeditor/file/82279770238.pdfIn PDF document text
    • https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/3d752d8c314fa5ce78a3e2774a2f0676/wokosilaruboloxa.pdfIn PDF document text
    • http://envigest.cz/upload/file/24244536729.pdfIn PDF document text

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