Malicious PDF — malware analysis report

Static analysis result for SHA-256 09270bf32834c311…

MALICIOUS

PDF

59.5 KB Created: 2021-08-14 03:20:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: b92a4336d4b58f8be864292ecd9baae1 SHA-1: 93066a07e4a2b70bf46d8c895d678a0fa656a33a SHA-256: 09270bf32834c311e40d5eebb3c4e09ab10411fd2c93ae1a24b6194664237234
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, many of which point to compromised WordPress sites or other disposable hosting. This suggests the document is intended as a link farm to distribute traffic to potentially malicious destinations. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5356

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://sieompaysdebray.fr/lesiom/txt/imgadmin/file/voredexokukimad.pdf In PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7e3a388c3---mewem.pdfIn PDF document text
    • https://thinkglobalcompliance.com/ckfinder/userfiles/files/33033514844.pdfIn PDF document text
    • https://coil.hk/upload/files/fasosozagivifobevuwusifuf.pdfIn PDF document text
    • http://sandsflooring.co.uk/ckfinder/userfiles/files/97543596692.pdfIn PDF document text
    • http://bartuceviri.com/userfiles/file/84153072565.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/pulf0h7nispg12v8993sput03a/rasodedozolilizixaveg.pdfIn PDF document text
    • http://houstontca.org/Content/uploads/files/47129214949.pdfIn PDF document text
    • http://analogsys.com/uploaded/file/43652315560bc6cfda3952.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/d6c38fcb9bf0d7962d75df84c888a799/gowuje.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/98395517960.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a03c42b1dee---xerikenuwovo.pdfIn PDF document text
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/5ngr69hu52jum4uliqbccc0j6t/nugajojutotikamonuwuluxir.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8ce47c649a---40711994625.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ac134ae0fbb---jowekatumise.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/16071d91005b4c---fobenamotebapuwumowufu.pdfIn PDF document text
    • https://monacollection.ua/wp-content/plugins/super-forms/uploads/php/files/41fff8309d6c838cb6b4b9fcebb7a906/kuwenifo.pdfIn PDF document text
    • http://vitalenzyme.com/uploads/fckupload/file/wobabaradizenadosele.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609caf4896f9e---gebigijovaluvov.pdfIn PDF document text
    • https://isosklo.cz./uploads/48980892113.pdfIn PDF document text
    • https://zold-kommando.hu/files/9201412719.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607d04eebf04d---88207983456.pdfIn PDF document text
    • http://hoshitorionline.com/uploads/files/wuzerovelefe.pdfIn PDF document text
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/8d5394650dbfa5235fbfecdd7931a146/rekemiwime.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=panasonic+kx-tga101s+telephone+user+manualPDF link annotation

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