MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, suggesting a link farm or redirection scheme. The ML classifier strongly flagged this PDF as malicious. The presence of multiple 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics indicates a deliberate effort to use the document for SEO manipulation or to host potentially malicious content via compromised infrastructure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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 https://infrive.ru/uplcv?utm_term=az+screen+recorder+online PDF link annotation
- http://banghetretruc.com/media/ftp/file/15699404369.pdfIn PDF document text
- http://grupopiscis.com/upload/files/nogejuzepeduzodap.pdfIn PDF document text
- http://christschoolblr.in/userfiles/file/renafuwakanexex.pdfIn PDF document text
- http://alliance-ic.ru/uploads/file/74817989735.pdfIn PDF document text
- http://hooleihomes.com/cms_images/file/7077918558.pdfIn PDF document text
- https://tranthachcaodanang.com/uploads/image/files/xumudomolozokopixixobarep.pdfIn PDF document text
- http://stomerijindex.nl/images/uploads/25373899857.pdfIn PDF document text
- http://skmsm.com/userData/board/file/zeburime.pdfIn PDF document text
- http://veoguidecostarica.com/ci/userfiles/files/dojome.pdfIn PDF document text
- https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/a10a2bdcb35de187ef3cad424a12835d/35950692499.pdfIn PDF document text
- https://kimcert.org/E/file/durumalajipujanigovatasig.pdfIn PDF document text
- http://pengyou-english.com/FileData/ckfinder/files/20210901_543157E0194AB354.pdfIn PDF document text
- http://bestorkate.com/uploads/ckeditor/files/bifekejesesunekawitadeg.pdfIn PDF document text
- http://2sisaccount.com/userfiles/files/74227069438.pdfIn PDF document text
- http://etoprosto.ru/ckfinder/userfiles/files/sadalumewapegitadojavosus.pdfIn PDF document text
- http://hoteldazegliotorino.com/userfiles/files/50902250425.pdfIn PDF document text
- https://dwitunggaljaya.com/sitefiles/file/nituk.pdfIn PDF document text
- http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/161340005a63b3---sivogudiritiwonasefopixa.pdfIn PDF document text
- http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/9aba92640c4ef582c4cc0ffcbf923bd2/renunudomosureranevasa.pdfIn PDF document text
- https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/161355052c20e1---sujope.pdfIn PDF document text
- http://yogo110.com/userfiles/file/94515007608.pdfIn PDF document text
- https://phm.vn/upload/files/40754117336.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_off0000e145.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE145 | 10144 bytes |
SHA-256: d5bc7a10227d64dff4abbdefa3e7794fd85562f49e770fe28361d2d5fde6fcc8 |
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font_01_sfnt_off0000f80d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF80D | 17872 bytes |
SHA-256: 2832afb32f8c7c98ae0be804c0bb5bef0ec25e804b56fe156d5e4950302735bf |
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font_02_sfnt_off00012633.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12633 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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