MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of external links, many of which point to compromised WordPress upload directories or disposable hosting, suggesting a link farm designed to distribute phishing content or malware. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing campaigns.
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://synerhu.ru/uplcv?utm_term=marketing+differentiates+a+firm+from+its+competitors
- http://rauvuonsach.com/images/uploads/files/12800034857.pdf
- http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/3ce41bd68d726ff0971d208cbd32c65f/tinadakalumanomiluvatasil.pdf
- http://lsbwg.com/ckfinder/userfiles/files/20210619/1502156121.pdf
- http://vtaky.sk/media/file/nidabatulonajiret.pdf
- https://shopabrang.com/images/files/lerezilerivuxufuwilofotag.pdf
- https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/b3be1d456addb8660f6b0a7dcd444959/6476068031.pdf
- http://maekuangudomthara.com/ckfinder/userfiles/files/80721286372.pdf
- http://etasystem.net/userfiles/files/20194914437.pdf
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8393ce9abf.pdf
- http://eros-arena-reutlingen.de/eros/userfiles/file/63122710646.pdf
- http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/1407ed4ea3e3443117203c99b622bac1/ferulilomotuludeburovuvi.pdf
- http://yomamasushitogo.com/uploads/files/govizonotojuwike.pdf
- https://eatorhours.org/e-bussiness/fckimages/file/31947521048.pdf
- http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a745b1958ff---19696573240.pdf
- https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/er6f8rjod5jmd5srafp34tnd8t/fupapewomi.pdf
- https://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/417a34df0801ad5ea6aa31f3fa75ae6e/wodoniroraxakonip.pdf
- https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/9a630aa116b16f8d22f510e9e58c2231/89362681947.pdf
- https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/4d911dfbd40c4d32d5e9864e0f31d20b/88540993729.pdf
- https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/3ba5082a37188b5d7438174c07170964/36582808681.pdf
- http://unioncentralreunion.com/clients/3/3a/3acd25563584ef55397927d4124196c4/File/bolisogogijenilaxuliguguv.pdf
- http://tktravel.shop/FileData/ckfinder/files/20210610_C395F146F1880E1D.pdf
- https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160ae2bdce3008---31313123167.pdf
- https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a383e1492df---54950180628.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0001182d.bina46fa2b3dfd9ddb201c3faee6abb409e9e1a9af08f24ef5a0e5db71f8e94f885 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1182D | 17240 bytes |
font_01_sfnt_off00014528.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14528 | 16792 bytes |
font_02_sfnt_off00015d3f.bin9292c059439709ef536f93d75c72112f10e9ef16d4e45f5d313d972a3cf83b15 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15D3F | 11004 bytes |
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