MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains a large number of embedded URLs, many of which point to compromised or disposable hosting services. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates that the PDF is designed as a link farm, likely for SEO manipulation or to distribute malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://coretry.ru/uplcv?utm_term=iit+jee+maths+syllabus+2019+pdf PDF link annotation
- http://tokyoto.pl/UserFiles/file/45685951231.pdfIn PDF document text
- http://mastervin.ru/files/file/89577982440.pdfIn PDF document text
- http://monthclean.com/uploads/files/202109031531033931.pdfIn PDF document text
- http://www.valathors.com/ckfinder/userfiles/files/joxesule.pdfIn PDF document text
- https://maritime-models.com/userfiles/file/24835673347.pdfIn PDF document text
- https://thepainter.asia/upload/files/84035715706.pdfIn PDF document text
- http://tw-tms.com/uploadpic/xw/files/68597301760.pdfIn PDF document text
- https://mmgrowersg.com/ckfinder/userfiles/files/10730933212.pdfIn PDF document text
- http://hocomesun.com/upload/batejitawipudiden.pdfIn PDF document text
- http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f84bce065c---30793418639.pdfIn PDF document text
- https://armagedonspedycja.pl/files/file/38731205002.pdfIn PDF document text
- https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/url6a2vgh7fs94m0c8d1tkrkor/19060909075.pdfIn PDF document text
- http://ylpqzl.com/ckfinder/userfiles/files/40688144791.pdfIn PDF document text
- http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161317040b6ac0---94905448132.pdfIn PDF document text
- https://lomasdelaweb.com/userfiles/2008.09/file/zepolimaguxomimikavexaxe.pdfIn PDF document text
- https://psg66.ru/admin/ckfinder/userfiles/files/99260810042.pdfIn PDF document text
- http://chinalabware.ru/d/files/vodutexatafemajuk.pdfIn PDF document text
- https://www.willmarshelter.com/ckfinder/userfiles/files/loworovutanixobebu.pdfIn PDF document text
- http://kripasec.com/userfiles/file/92018610626.pdfIn PDF document text
- http://mbfeed.vn/upload/files/melotuzovefim.pdfIn PDF document text
- https://glearningsolutions.com/userfiles/files/21221198923.pdfIn PDF document text
- http://saringkarnwood.com/UserFiles/file/zaxubedejimofi.pdfIn PDF document text
- https://patoman.ro/ckfinder/userfiles/files/36163922427.pdfIn PDF document text
- http://qishuochem.com/siicea/userfiles/file/29874642242.pdfIn PDF document text
- https://mlbcsimleague.com/ckfinder/userfiles/files/89387726014.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_off0000cbca.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCBCA | 18164 bytes |
SHA-256: 198c11dc2a164799e97e401d7d236753be0bfdcc4e6ada5cfd0e4297f0925960 |
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font_01_sfnt_off0000fb18.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB18 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001132f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1132F | 11336 bytes |
SHA-256: 31da9ec7dcecf34a67e41b80d1426ae75472229010a98164c91c8fe3dc0df580 |
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