MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable domains, suggesting a link farm or phishing lure. The ML classifier strongly indicates maliciousness. While no scripts were explicitly extracted, the presence of embedded URLs and the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' point towards an attempt to manipulate search results or redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9971
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://wastran.ru/uplcv?utm_term=discrete+mathematics+handwritten+notes+pdf+download PDF link annotation
- https://alexandrapanayotou.com/web/images/static/file/91811722504.pdfIn PDF document text
- http://bean2beenefamilytree.com/clients/60578/File/43196080884.pdfIn PDF document text
- http://velapower.com/glwh/UploadFile/file/2021072517483973499.pdfIn PDF document text
- http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083d51b8e25c---22892799522.pdfIn PDF document text
- http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608f5ebf5752b---6359809842.pdfIn PDF document text
- http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b99c55f98a---zafuwivitol.pdfIn PDF document text
- https://ebooksweb.net/files/file/bolidowa.pdfIn PDF document text
- http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608815778a13f---65862839717.pdfIn PDF document text
- http://mlsy.cz/images/file/files/60238875698.pdfIn PDF document text
- http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160bd6bb5b02e4---57871231777.pdfIn PDF document text
- http://think6.net/ckfinder/userfiles/files/20210904164354.pdfIn PDF document text
- https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/s8g5c531rqn4kjhc0abc700rk6/71531343105.pdfIn PDF document text
- https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/2978019c5beadd75dd45373279a9aa4c/vilabiziwovurumugem.pdfIn PDF document text
- http://patronusalapitvany.hu/public_html/upload/suvelewawepa.pdfIn PDF document text
- https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/4dtdpjpp0peb9rt0rb1iu2qt13/82028447260.pdfIn PDF document text
- http://uitetenindex.nl/images/uploads/18572677469.pdfIn PDF document text
- http://chinajessie.com/seadata/data/uploads/img/file/162278715224.pdfIn PDF document text
- http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2efab40ec1---buwipodo.pdfIn PDF document text
- https://fotobolfestmeny.hu/mvc/userfiles/file/merewoxuxovipox.pdfIn PDF document text
- https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7dafb033a9---fagoma.pdfIn PDF document text
- https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1606d413d5405c---tesimi.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_off0000c11e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC11E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d930.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD930 | 18552 bytes |
SHA-256: b3dd131bf975c3c99ebe5af95f1ac379d43e4663f8527e6cb81cdee1310d9ef7 |
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font_02_sfnt_off00010904.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10904 | 10972 bytes |
SHA-256: 4e1bdfd9684d700fbe6a0bf720a24b9d18bd762b009fac3070eb078d1abc65d2 |
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