Malicious PDF — malware analysis report

Static analysis result for SHA-256 89bf7a576406b26d…

MALICIOUS

PDF

62.3 KB Created: 2021-09-05 16:21:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 9ffc3ae0312527912b3393a23deec97a SHA-1: 1746d850e9b972fd8dbcc9b9021cfe35150363ae SHA-256: 89bf7a576406b26d28fb42d6d8a96e6d2f484341523713abf125a7376f5464c2
154 Risk Score

Malware Insights

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

The PDF document contains numerous links, many of which point to compromised WordPress sites and disposable domains, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5046

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://iscyber.com/userfiles/files/pibuzunepigowesudor.pdf In PDF document text
    • https://ovalpolycoats.com/media/xisupokipijagiromadi.pdfIn PDF document text
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/9ed2c9f3e8c82e9e755bb4f28c0e9d4d/67754358279.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1b9161bc8d---wugusavegavijakarax.pdfIn PDF document text
    • https://floridaholidayplanner.com/wp-content/plugins/super-forms/uploads/php/files/81fbaec4dc212bb6e07366af03c3aab5/jenufojet.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/ff5f5ac79a4876fe973c51289e313a98/vikugeforolifu.pdfIn PDF document text
    • http://szyuangang.com/UserFiles/file///15456127515.pdfIn PDF document text
    • https://fotokeramika.bg/userfiles/file/logawidonomuwumoduwapowa.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/cfdb52918d22fdf3c7d626abb177e597/vofuxadexar.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/zeragi.pdfIn PDF document text
    • https://birsamundapark.in/userfiles/files/27179972599.pdfIn PDF document text
    • https://www.sixteengrams.com/wp-content/plugins/super-forms/uploads/php/files/r14p65et2kqrd4dra2bodsesd6/85654075842.pdfIn PDF document text
    • https://implant-drill.com/userfiles/file/23996931776.pdfIn PDF document text
    • http://yds-wcv.jp/free_images/files/36297088290.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/16123a2ec5e9b7---92409665353.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0558c44e9a---57484226361.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c22bd7768d3---87596575888.pdfIn PDF document text
    • http://pro-elec.ru/ckfinder/userfiles/files/66410698216.pdfIn PDF document text
    • http://myhomeinparis.com/userfiles/files/fanosatomul.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611fb8081cedd---8933814713.pdfIn PDF document text
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160822e6cae753---jonim.pdfIn PDF document text
    • https://dalilak1.com/userfiles/file/54899829219.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f23a232b44---36665573615.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/ohsk43dgaca1q5fvuqf83qmf42/matilagiz.pdfIn PDF document text
    • https://luyenthitoeic.info/userfiles/file/97612430636.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=operations+and+supply+chain+management+pdf+jacobsPDF link annotation

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