MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains embedded JavaScript and a significant number of external URIs, many of which point to potentially compromised CMS upload directories or are part of a link farm on disposable hosting. The presence of embedded JavaScript suggests an attempt to execute malicious code within the PDF viewer, likely to facilitate further compromise or redirection.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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 http://www.ciesol.com/ckfinder/userfiles/files/24085552998.pdf In PDF document text
- http://etenindex.nl/images/uploads/82806452616.pdfIn PDF document text
- https://alwaysthesame.pt/site/upload/file/57048386646.pdfIn PDF document text
- http://bankerz.in/qpic/files/23462049587.pdfIn PDF document text
- https://simpangkanan.com/contents/files/36697336951.pdfIn PDF document text
- http://www.ramseier-appenzell.ch/elrada/js/ckfinder/userfiles/files/kawenigedaripiruf.pdfIn PDF document text
- http://nfraccon.org/userfiles/file/19115583639.pdfIn PDF document text
- https://snowcat.pl/admin/ckfinder/userfiles/files/rinokabasali.pdfIn PDF document text
- http://cnmrobotics.com/files/files/mokodamakebipe.pdfIn PDF document text
- https://raljob.com/userfiles/file/8663955151.pdfIn PDF document text
- https://swaarm.de/app/webroot/upload/files/rugumeve.pdfIn PDF document text
- http://angelascanu.it/uploads/file/4629478755.pdfIn PDF document text
- https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ee6b2959a5---pejik.pdfIn PDF document text
- http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613987586a002---jakoniwizomipojug.pdfIn PDF document text
- http://nbkhjc.com/uploads/202109/file/210906234625563677x03pzmol3xh9.pdfIn PDF document text
- http://papierplus.pl/userfiles/file/65593161391.pdfIn PDF document text
- http://fsgzb.com/upfolder/e/files/20210909195330.pdfIn PDF document text
- https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136abe98b2e9---ragiwarupukalikeweg.pdfIn PDF document text
- https://kolkataangikar.org/ckfinder/userfiles/files/78462718069.pdfIn PDF document text
- http://ck-buhgalter.ru/userfiles/file/13678683420.pdfIn PDF document text
- http://ghibms.com/userfiles/files/73614997266.pdfIn PDF document text
- https://minjar.mebel18.com/uploads/files/6620761304.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=how+to+recover+deleted+notes+from+android+phonePDF 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_off0000e2c1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE2C1 | 17640 bytes |
SHA-256: 8a50613bb76e08593d710509bf74f5dc09b15afe70caffd0b4c4ea4d6f66ddec |
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font_01_sfnt_off00011064.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11064 | 11028 bytes |
SHA-256: b5286716f0fd4e5828effdd5af1703a6fdb6653aa42f1476aef1a98d9b3615e0 |
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font_02_sfnt_off000129da.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x129DA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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