MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating it likely contains malicious content. Heuristics reveal it functions as a link farm, directing users to multiple external URLs, some hosted on compromised or disposable domains. The presence of numerous PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM firings suggests an attempt to distribute malware or conduct phishing through these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF 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.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall 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.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne 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://www.stjohnhomelessshelter.org/wp-content/plugins/super-forms/uploads/php/files/a2c06b515c8869340b1de7db19d78482/novunoganowesusapajavuka.pdf In PDF document text
- https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bdffaa72f6---gijapilubefa.pdfIn PDF document text
- http://maygiaphat.com/upload/files/29473261341.pdfIn PDF document text
- http://www.wcd.com.tw/ezadmin/ckfinder/userfiles/files/vaniponoza.pdfIn PDF document text
- https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/1610b40616d4f5---18203833050.pdfIn PDF document text
- http://meyras-tourisme.com/ressource/site-image/files/futudivibokuterenori.pdfIn PDF document text
- http://sieuthibds.net/images/files/43580907800.pdfIn PDF document text
- http://ahs1968.com/clients/d/dc/dcea35c349c70fb55dca458fc6558ff6/File/powopijekugu.pdfIn PDF document text
- https://www.baust.edu.bd/app/webroot/ckfinder/userfiles/files/rabilanarogura.pdfIn PDF document text
- https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a72cb33bc9d---gozojokes.pdfIn PDF document text
- http://southport1969.com/clients/861680/File/lomuremimox.pdfIn PDF document text
- http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608e4f02d836d---11487117252.pdfIn PDF document text
- https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9cc1f77715---96682580602.pdfIn PDF document text
- https://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/5tacjolkq1rr69gr20t4garlmj/34571486309.pdfIn PDF document text
- https://myarchitect.es/ckfinder/userfiles/files/nonavipiralavokolemababov.pdfIn PDF document text
- https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/16085dd779db47---63183057373.pdfIn PDF document text
- http://asiadomainstore.com/userfiles/file/vofefebogikawinuzix.pdfIn PDF document text
- https://szekszardportal.hu/userfiles/file/83181422979.pdfIn PDF document text
- https://perfecthospital.org/FCKeditor/file/gekuwunuv.pdfIn PDF document text
- http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/9d42e3402d4b077430519c3e23520d00/32582927659.pdfIn PDF document text
- http://ulrike-mayer.de/userfiles/files/kekul.pdfIn PDF document text
- https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/c770f334242aee0330b6303dd6419924/69894416079.pdfIn PDF document text
- http://shengnabei.com/uploadfile/file///2021071713252412.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=descargar+gratis+libro+la+culpa+es+dela+vaca+para+ni%C3%B1osPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000dc1e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC1E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f435.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF435 | 11204 bytes |
SHA-256: e24a8510a22443380e8f309fe26b843a811d77d9774f1f0deb42251823efd53f |
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font_02_sfnt_off00010dec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DEC | 17652 bytes |
SHA-256: b5fed07018a523e014a792ef9cd7435d7a0afc465f5a2ce82205dd9900f06ec0 |
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