Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb196966a6d06192…

MALICIOUS

PDF

54.7 KB Created: 2021-09-04 12:34:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 3ae3bd191f25e3924a3d8a2f39f5be98 SHA-1: 2ddcfff0e46886f03825751db49b0f0a79264fa2 SHA-256: cb196966a6d06192790c0795401e4f290c7454a1b44fb868cbaae5c26207e086
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple external websites, many of which are hosted on compromised CMS uploads or disposable domains. The presence of numerous unknown URLs suggests an attempt to distribute phishing content or download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5455

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/gioi66adj6fkcv3d568193a9s4/pugivonujufefapizezo.pdf In PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160fab30003d15---didilanifatupekibineri.pdfIn PDF document text
    • https://tidurmalam.com/contents//files/lolimogagavovaniz.pdfIn PDF document text
    • https://gencerenerji.com/resimler/files/dizukivalevusimupu.pdfIn PDF document text
    • https://artlabjo.com/userfiles/file/xekafafesodojixepu.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/1609465dedfc97---nejix.pdfIn PDF document text
    • http://dejede.com/userfiles/file/vusewidapaneso.pdfIn PDF document text
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/1ebe7547099c5e74b63859b008b44170/70563808272.pdfIn PDF document text
    • http://jumpinfit.it/userfiles/files/66518287775.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612d37df3819b---lanewatub.pdfIn PDF document text
    • http://niestachow.pl/data/aktualnosci_imgs/file/36209352622.pdfIn PDF document text
    • http://moestuinwebshop.nl/userfiles/file/jujebodo.pdfIn PDF document text
    • http://madang.eu/f_pds/fck/file/lazikobonifape.pdfIn PDF document text
    • https://ozmutludokum.com/userfiles/file/2706825396.pdfIn PDF document text
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/cb0e3f0aa400c691484505fb904b5351/32967718477.pdfIn PDF document text
    • http://intelekt.biz/uploads/pages/files/99918408975.pdfIn PDF document text
    • http://xn--e1aaafipco3bk8gra3b.xn--p1ai/upload_picture/file/82487121076.pdfIn PDF document text
    • http://willbramephotography.com/puxabavusupipaz.pdfIn PDF document text
    • http://lws-realestate.com/userfiles/files/19442902376.pdfIn PDF document text
    • https://www.letspassdriving.co.uk/wp-content/plugins/super-forms/uploads/php/files/jb6vro74ao582v67g69lnti259/wujadedirobeseguwuw.pdfIn PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/84666306af9f1f627775a45095869808/91538775233.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1a207da626---xuwevagixamikagig.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6a62316121---80172982303.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=trickling+filter+design+pdfPDF link annotation

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