MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous links pointing to various domains, many of which appear to be disposable or compromised, suggesting a link farm used for phishing or malware distribution. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the ClamAV detection 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0' strongly indicate a malicious intent, likely phishing or malware delivery. The ML classifier also flagged this PDF with a high probability of being malicious.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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://synerhu.ru/uplcv?utm_term=stewart+calculus+7th+edition+pdf PDF link annotation
- https://atrax.eu/userfiles/file/budemizevamimikugivo.pdfIn PDF document text
- https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/lc3pelb1864qa68fdteom86e50/25791766655.pdfIn PDF document text
- http://hyundaidongdo3s.com/images/files/27257891368.pdfIn PDF document text
- http://laptopplus.be/app/webroot/files/userfiles/files/mogalijakaxufoge.pdfIn PDF document text
- http://japhina.com/upload/file/bodupol.pdfIn PDF document text
- http://atya.eu/files/file/logano.pdfIn PDF document text
- https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/53731a426a732b79cb99f77ef5ef61fe/riwaxerusewitawipodod.pdfIn PDF document text
- http://giaydantuongphongngudep.com/images/news/file/19012184231.pdfIn PDF document text
- http://aallergy.friend-match.com/upload/files/38333033539.pdfIn PDF document text
- https://peltonfell.org.uk/ckfinder/userfiles/files/nejujawadebu.pdfIn PDF document text
- http://wxmx.cn/upload/ckimg/files/202109021626035882.pdfIn PDF document text
- http://theorientgarden.iorderfoods.com/uploads/files/jadujidum.pdfIn PDF document text
- https://shinaltd.ru/images/file/remewa.pdfIn PDF document text
- http://dalhousieretreat.com/cote_dor_import/admin/ckfinder/userfiles/files/28242428267.pdfIn PDF document text
- https://ppntassone.it/dati/upload/file/kuweju.pdfIn PDF document text
- http://deleeuwputten.nl/site/data/ws/files/salok.pdfIn PDF document text
- https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f653d7d18a---valanoja.pdfIn PDF document text
- https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/29qnv1qk36qe8iopedgtk48n66/89702058770.pdfIn PDF document text
- https://x-software.cz/data/file/10366613855.pdfIn PDF document text
- http://quimicahj.com/admin/userfiles/userfiles/file/widubagemixuligijirib.pdfIn PDF document text
- http://guchen.ru/d/files/57689555417.pdfIn PDF document text
- 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_off0000bbfa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBBFA | 11028 bytes |
SHA-256: 4d076d890ac2f62eb7d6a156d054a3ede941c5e97b713f44a1055fb1e8bcfd3c |
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font_01_sfnt_off0000d5a2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD5A2 | 15892 bytes |
SHA-256: a31bfedaab32293c08b40c6b6142a62bb658d763afc24ec47543d1f349c58cd1 |
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font_02_sfnt_off0000fe98.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE98 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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