MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to potentially malicious content. The presence of these links and the overall structure align with a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://oniceh.ru/uplcv?utm_term=ugc+net+question+paper+2018+december+pdf PDF link annotation
- http://ldksolar-officialliquidation.com/userfiles/files/dofej.pdfIn PDF document text
- http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608885564ab36---wefunavikap.pdfIn PDF document text
- http://mobiliteit.nu/files/30234165634.pdfIn PDF document text
- https://consultingexpert.eu/fckeditor/userfiles/file/rozemurokikaxoruropoguti.pdfIn PDF document text
- http://winteringlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/nunijikisapov.pdfIn PDF document text
- https://nabijdefossa.nl/upload/files/gobaximinuw.pdfIn PDF document text
- http://apsara.ru/userfiles/file/75991380461.pdfIn PDF document text
- http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2619017bf73709fa9654e05c97f3c6c9/xivikedokekovan.pdfIn PDF document text
- https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/cefccbc019daa0edb26a2d0bd3f70dd6/xefafesazosopowuxinimile.pdfIn PDF document text
- http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1607c935e90245---21363908458.pdfIn PDF document text
- https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e9112cf477---mifigoguwinewafade.pdfIn PDF document text
- http://caudafotografia.com/userfiles/files/dokasetefetomovegus.pdfIn PDF document text
- https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afe3584b82a---xufatevitifulalu.pdfIn PDF document text
- https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/94aee1e4f1514543d9b40959a0a46610/70466241625.pdfIn PDF document text
- http://alphasigmaoverseas.com/userfiles/file/verabemuwanurasagedomot.pdfIn PDF document text
- http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092b360e761f---towodod.pdfIn PDF document text
- http://metabolit-plus.ru/files/file/xugipinuwese.pdfIn PDF document text
- http://www.guus.edu.mn/ckfinder/userfiles/files/pamajibeximi.pdfIn PDF document text
- https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/0640f01e19ac92baec140109d8624ede/novixemijukezuvexosiwatun.pdfIn PDF document text
- http://china-zub.ru/userfiles/file/kazudedidaboponutufepuse.pdfIn PDF document text
- http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/d7a1caa760b878b68d83f9fd19cb7bad/20317676478.pdfIn PDF document text
- https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/392pdrp7hket9nbd5u6lto7out/64790150972.pdfIn PDF document text
- http://savalis.ru/userfiles/file/97146620140.pdfIn PDF document text
- https://master.plus/wp-content/plugins/super-forms/uploads/php/files/47bc91560a7ada2f5168cdda886fdcda/24605802624.pdfIn PDF document text
- https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/7qppplocrbh7bug6hpmv95md4n/85684077346.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_off0000fd5a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD5A | 18532 bytes |
SHA-256: 1b620b2b6667199cd251116beb83c1288ee7fa71e261abc68cb78c1ed750e197 |
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font_01_sfnt_off00012d36.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12D36 | 11812 bytes |
SHA-256: 4f18009c295c5ad99a0f5630ca6421022172ee701a5ccb356670069aed918668 |
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font_02_sfnt_off000148e0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x148E0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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