Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbb9847cd3bfd71d…

MALICIOUS

PDF

59.5 KB Created: 2021-08-17 09:28:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 1dcf0d0fee74f2dd85a2b928fcf173a6 SHA-1: 27bf99da3423c619ce56912bfa066876ab455f17 SHA-256: fbb9847cd3bfd71decb8c744926c326adb4fa0fd3e6af85d3c13398df3c69d93
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to compromised WordPress sites and disposable hosting, indicative of a link farm used for phishing or malware distribution. The ClamAV detection and ML classifier strongly suggest malicious intent. The embedded URLs are likely part of a campaign to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8677

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://przedszkolenisko.pl/userfiles/file/sefobokeruzonekesepepote.pdf In PDF document text
    • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/92469be6930559312b790bec8ede24a5/3595152969.pdfIn PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/899ed4fb659d4e602688865fe2ee03e2/83359120134.pdfIn PDF document text
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c2f035d7c76---73472790888.pdfIn PDF document text
    • http://sergey-yushkov.com/pict/file/jepabilizevudubilaval.pdfIn PDF document text
    • https://tyeetomsfishing.com/userfiles/file/9881948956.pdfIn PDF document text
    • http://zulaikhatextile.com/userfiles/files/vaxofibalutij.pdfIn PDF document text
    • https://binarbaidtrading.com/public_html/userfiles/file/subikis.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a0171239cd2---zediximivakituxabogazi.pdfIn PDF document text
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6a824c0c99---juvuka.pdfIn PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16093c3d23e3c0---22285291149.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/66c17c4bdbd685cb6aa2219f9fc51696/xuvoraliwufogajate.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1608f229c4834b---10570555841.pdfIn PDF document text
    • https://speculatio.in/userfiles/file/watomimabobim.pdfIn PDF document text
    • https://himarco.ir/basefile/himarcoir/files/75655904079.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/89gt6g0vp2s3vnufp73c79jfc5/wekikodilinixelew.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/160866de034591---wutomegigasisijiboxura.pdfIn PDF document text
    • http://beautybybelief.com/admin/images/file/gunixidufuvinovilifikax.pdfIn PDF document text
    • http://francescasciortino.it/userfiles/files/21262590124.pdfIn PDF document text
    • http://klick-tipp.info/ckfinder/userfiles/publics/files/75636305011.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b64d790570b---sopifo.pdfIn PDF document text
    • https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/v0oe798fib7infe75ig011b36t/9170371458.pdfIn PDF document text
    • http://bluecars.pl/userfiles/file/gasixizid.pdfIn PDF document text
    • http://kielcenoca.pl/files/file/6283059474.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee54b3841c5---wopubafexi.pdfIn PDF document text
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/5392b6c9400a7b03731cd5a2fba5adc9/wiganuw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=manual+de+instrucciones+microondas+orbegozo+mig+1810PDF link annotation

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