Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bcc648d799712c8…

MALICIOUS

PDF

71.2 KB Created: 2021-07-17 11:16:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 7eee8acb4ee1580b0d1fc02479fe3a5f SHA-1: 661ae30900f9f79e8be3016f7180c6b80fcf3e1a SHA-256: 2bcc648d799712c8c79b0e71136c84c5f9b62dc06d709d1356a076b10c4246e7
154 Risk Score

Malware Insights

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

The sample is a PDF document identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs that point to compromised CMS upload storage, suggesting an attempt to lure users to malicious content. The presence of multiple distinct hosts and the nature of the URLs indicate a phishing or redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5460

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 http://ucity1967.com/clients/f/f9/f95c10655bf48216a4b8c8e4321ec146/File/kinozevuvelalodonixi.pdf In PDF document text
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/9c1b426e0a8ea521a7ae6b22e06408c6/pimuropatasuxexagavo.pdfIn PDF document text
    • http://pphu-joanna.pl/fckpliki/file/misibuninapijazikula.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/16095fa966a1ad---xosevorerikijezikofovodar.pdfIn PDF document text
    • http://polkovnik.su/upload/file/gabizopiwugilabofajigid.pdfIn PDF document text
    • http://greatwalledmond.com/ckfinder/userfiles/files/69803415757.pdfIn PDF document text
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/6a4feeec27a9a9648fadf838e52335fc/fojojazeloga.pdfIn PDF document text
    • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/ju1i7p7t0mjorh0msle0pium43/xufotuke.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d1d18b780f6---4232563642.pdfIn PDF document text
    • https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/dcdb09ec4da0a26ccfd89cc8b55908fe/bokumixezagirogokotokome.pdfIn PDF document text
    • http://somersetcountybar.org/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/gujovedaganizinilisal.pdfIn PDF document text
    • http://abwferrellpkwy.com/uploads/files/fefojizabubetekelezape.pdfIn PDF document text
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/160720931a69c5---juvofurowujojikige.pdfIn PDF document text
    • http://ifa-astrologie.de/userfiles/file/73349086570.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/kaamqqt7p8qg853b2bv856s17h/49398015019.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3495b9213c---zaxel.pdfIn PDF document text
    • http://www.bash.cl/media/file/tumusigobiguwovif.pdfIn PDF document text
    • https://gangnampools.com/contents//files/fepixu.pdfIn PDF document text
    • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/h398nck0qu4jrtrisrqpckgdl0/xixavetepofofev.pdfIn PDF document text
    • http://evolutionchonburi.com/userfiles/files/82194884366.pdfIn PDF document text
    • http://orbitsecurity.qa/pro_mvp_tech/uploads/file/fosiletifekejufazunele.pdfIn PDF document text
    • http://sh-ruiyangcpa.com/userfiles/file/2021-6///2021626116568038.pdfIn PDF document text
    • http://princeton1959.com/clients/863834/File/xuwogeji.pdfIn PDF document text
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/c99e0ea80cf77c8d2d03cb56b121d57b/maxub.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=laughing+colours+quotes+on+lifePDF link annotation

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