Malicious PDF — malware analysis report

Static analysis result for SHA-256 0656e64928f3e2e4…

MALICIOUS

PDF

44.3 KB Created: 2021-09-04 15:10:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: b734bb59e56bdfe9f15e6bb9a4a493cd SHA-1: 2a54125a78b82bc6e12de32cee21c9830864ff92 SHA-256: 0656e64928f3e2e40e58da455513558701ea4c0114096147de211e32be7bcb9a
154 Risk Score

Malware Insights

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

The PDF contains a large number of links, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The primary attack pattern involves directing users to external, potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5654

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://kozhikodedeaf.org/admin/my_files/file/mukoraposekonajo.pdf In PDF document text
    • http://zhengfutz.com/v15/Upload/file/2021526121113095.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/2bef44ceedd2de03d55976a724f6ee19/29420950557.pdfIn PDF document text
    • https://vegan-eshop.cz/data/file/60199116407.pdfIn PDF document text
    • http://ifa-astrologie.de/userfiles/file/xenoseluxuxaxe.pdfIn PDF document text
    • http://eventechsite.com/files/files/neliwa.pdfIn PDF document text
    • http://ambcavallon.eu/userfiles/files/27359259937.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9ff9819766---93307555724.pdfIn PDF document text
    • https://elpollopaulino.com/cenavarra_userfiles/files/93320649012.pdfIn PDF document text
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093a934671e7---44191679282.pdfIn PDF document text
    • http://rolmech-strzelno.pl/Upload/file/tuwanus.pdfIn PDF document text
    • http://drthchowdary.net/userfiles/file/voxotebejigiju.pdfIn PDF document text
    • http://www.enjoyvaltellina.it/admin/ckfinder/userfiles/files/gejolusidexudokesanozarez.pdfIn PDF document text
    • https://cicadit.ro/UserFiles/file/livajexowakisatemobogatiz.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/jqgnjqmnblmm9uf0u2ps2kpn63/voxesalekitixobi.pdfIn PDF document text
    • https://hissekurban.com/resimler/files/80804017982.pdfIn PDF document text
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/4d9eed30fc0eb2513ebf4157fa2417b7/tevezeroxotodazirepe.pdfIn PDF document text
    • https://kozhikodedeaf.org/admin/my_files/file/76606979707.pdfIn PDF document text
    • https://gea99.com/ckfinder/userfiles/files/zubixabob.pdfIn PDF document text
    • https://0a3exp.com/upfiles/editor/files/mobek.pdfIn PDF document text
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/cba5d1ae33947fd803b4e742d463da8b/damofitozazababokix.pdfIn PDF document text
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/33d120ec7ace71d1b732724f598f7026/kodosimudigavazimodizew.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/emcaed8jqu7e53t87par2jqhl3/jogebexawasusemobujexe.pdfIn PDF document text
    • https://leesman.com/wp-content/plugins/super-forms/uploads/php/files/4ed0301f182c1ea1099a67bfef4c58f0/xixudalatobebe.pdfIn PDF document text
    • http://www.iece.in/userfiles/file/88592154950.pdfIn PDF document text
    • https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1609836ee833a6---62490650887.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=a+wrinkle+in+time+book+vs+movie+worksheetPDF link annotation

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