Malicious PDF — malware analysis report

Static analysis result for SHA-256 c702924df8117c44…

MALICIOUS

PDF

70.3 KB Created: 2021-07-23 18:01:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: e7d6b5ce36e5c8524ad59a39627b1dfe SHA-1: 92805349cb8dd4648b1d280233d29d2c5a52f96e SHA-256: c702924df8117c44f7997b5d4bc7706057d44d2c67219b701d9e7414c3adc615
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file identified by ClamAV as Pdf.Phishing.Trojan. Heuristics indicate it functions as a link farm, directing users to multiple compromised WordPress upload storage locations and other unknown domains. The ML classifier also flagged this PDF as malicious with high confidence. The presence of embedded URLs suggests an attempt to redirect users to malicious sites for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9537

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://maribon.net/app/webroot/files/userfiles/files/fetewolokir.pdf In PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/308e448944083781fac9e4a9b2f83da1/90619920199.pdfIn PDF document text
    • http://idroter.org/userfiles/files/jomitikibuxexijawuj.pdfIn PDF document text
    • http://www.pattyn360.com/upload/forum/files/gipimegidolosubo.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/160a0f984dba9a---pediwitokuzabitoruwidujob.pdfIn PDF document text
    • http://amsaneeraus.fi/userfiles/files/lefuwonukawetibovob.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d05f003307c---jonubosaluxetak.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/tukigu.pdfIn PDF document text
    • http://npxbyy.com/wang3_3_10_27/Upload/Upload/file/2021611724428813.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/4dtd51g6uvkp4i9k87idmups5q/seziloputazad.pdfIn PDF document text
    • https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/e208f8129335f640be5a4276b18a7c71/tafasijajariwopaxizekew.pdfIn PDF document text
    • https://medgarlci.com/wp-content/plugins/super-forms/uploads/php/files/a096bc95845fdf306df344aa40c1230a/46241085432.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b3350c10687---baguni.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607629efd4c82---ledexapoza.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096a89fb05b1---77084659593.pdfIn PDF document text
    • https://daaeportrett.no/upload/file/fekiketabepalogubiwijot.pdfIn PDF document text
    • http://info56.ru/userfiles/file/79790168346.pdfIn PDF document text
    • http://proxima-design.cz/files/file/munimekalonozo.pdfIn PDF document text
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/08f42f7d5989c100a18342004d364fad/sumivom.pdfIn PDF document text
    • http://sukhabalka.com/files/file/55089378844.pdfIn PDF document text
    • http://papianiarch.it/userfiles/files/75033432424.pdfIn PDF document text
    • http://www.awakohchang.com/image/upload/File/ufumuwamokorajite.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/4lmv3bkeqpub8018s43o709s92/89141427718.pdfIn PDF document text
    • http://viprealestatebrokers.com/userfiles/files/44680833065.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=how+to+use+the+maschine+mikro+mk3PDF link annotation

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