MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains a large number of external links, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm. The ML classifier strongly suggests maliciousness. While no scripts were explicitly extracted, the presence of numerous URLs, including one pointing to a compromised CMS upload, suggests the document is intended to redirect users to potentially malicious content or phishing sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
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://cructi.ru/uplcv?utm_term=fisica+general+hector+perez+montiel+6ta+edicion PDF link annotation
- http://sns.hu/_user/file/29001975776.pdfIn PDF document text
- http://armanetti.com/images/50801489592.pdfIn PDF document text
- http://www.dfdtrading.sk/ckfinder/userfiles/files/45849578953.pdfIn PDF document text
- https://asset-books.com/userfiles/file/94732123439.pdfIn PDF document text
- https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/160813bb6c4f75---kawalekugijetapelexex.pdfIn PDF document text
- http://selmanoglusigorta.com/userfiles/file/midenuvexafisukurokep.pdfIn PDF document text
- https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3be7d0810e---23540092495.pdfIn PDF document text
- https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/77ec2e486626557a27b156644b22a5a4/35757272259.pdfIn PDF document text
- https://gastrotest.co/ckfinder/userfiles/files/31848431293.pdfIn PDF document text
- https://aashianarealty.com/file/sugajez.pdfIn PDF document text
- http://aeronautike.com/userfiles/file/nulirogawodigavibi.pdfIn PDF document text
- https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/9e82f838439418cf8986e21555959239/93924588737.pdfIn PDF document text
- https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095b83751636---68921315864.pdfIn PDF document text
- http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160b6aa5b88461---4378593190.pdfIn PDF document text
- http://bakefruit.com/uploads//files/202108021946486089.pdfIn PDF document text
- http://119hero.kr/userData/board/file/gigoxejenorixutetox.pdfIn PDF document text
- http://afghansolar.com/userfiles/file/61302090749.pdfIn PDF document text
- https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/dc34e2e5c95b6dc9e00329719193e732/nujaw.pdfIn PDF document text
- http://www.northern-japan.com/image/upload/File/napumo.pdfIn PDF document text
- https://yssnewlessons.org/UserFilesTwo/file/60073756073.pdfIn PDF document text
- http://klhl.com/userfiles/file/losadezaruwijixonefu.pdfIn PDF document text
- https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/p210tn72b4o40c5b25ab4ug2l5/jekovojituzixutibi.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_off0000d831.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD831 | 11168 bytes |
SHA-256: 3183c6dfe5991a3e8ff8c48b1bb7137348ae693b9a2748dd5d00756e95b4d9a3 |
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font_01_sfnt_off0000f1ef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF1EF | 18640 bytes |
SHA-256: c7b314de289466c24e603eaecd28ac2807bf6eb6a0d67ceedb8166d7bc61f650 |
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font_02_sfnt_off00012185.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12185 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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