MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link farm with numerous URLs pointing to compromised CMS upload storage and disposable hosting, indicating a malicious intent to distribute further content or manipulate search engine results. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious link farm. No scripts were extracted from this sample.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
Heuristics 5
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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 http://orthocarecentroortopedico.it/userfiles/files/25429820734.pdf In PDF document text
- http://graylegalservices.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/gukopopabavufupapag.pdfIn PDF document text
- http://boek.se/bilder_umeny/File/vamejolobe.pdfIn PDF document text
- https://igruppe.no/ckfinder/userfiles//files/ribitilaze.pdfIn PDF document text
- http://logopeda-empatia.pl/content/file/filumemuputaxuzawejo.pdfIn PDF document text
- http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160ce878a01e60---muboliwolukobewoxap.pdfIn PDF document text
- http://dynamicyunnan.com/ckfinder/userfiles/files/karim.pdfIn PDF document text
- http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aaea7f996c1---65257041093.pdfIn PDF document text
- https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/dd984b45a4c9d677be26976ec3c88b33/21704618287.pdfIn PDF document text
- https://www.surajinformatics.com/wp-content/plugins/super-forms/uploads/php/files/ee64c79f76b7f3eb3c6026443a8921d8/4095688597.pdfIn PDF document text
- https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/161295e0db7375---32074807243.pdfIn PDF document text
- http://rrarental.org/upload/file/pizugakawavad.pdfIn PDF document text
- http://dxqzx.com/ckfinder/userfiles/files/20210802_061717.pdfIn PDF document text
- http://leakefamilyreunion.com/clients/63964/File/gimesapatojoguxadoxogudub.pdfIn PDF document text
- http://renovator.cz/files/file/perivorajilumejulabidigil.pdfIn PDF document text
- http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16085f88273be1---42024098784.pdfIn PDF document text
- https://vico-domrep.com/ckfinder/userfiles/files/posonazures.pdfIn PDF document text
- http://emblem4home.com/UserFiles/Member/File/80745389013.pdfIn PDF document text
- http://moristas.com/userfiles/files/85517930735.pdfIn PDF document text
- https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abc6164355b---lunakaxilez.pdfIn PDF document text
- https://wittnebel.dk/file/tusibexowuralilonatof.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=define+sociology+pdfPDF 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_off0001238b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1238B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00013b9d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13B9D | 18528 bytes |
SHA-256: 7622eab854675d55c917210aaefe0f87b1dce52d64a5ae462bed406e6fb35242 |
|||
font_02_sfnt_off00016b73.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16B73 | 10548 bytes |
SHA-256: 412389cc71d8c70cf58d8e23455bb5c783edef2f9870c7da6c533da6d2957d9d |
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