MALICIOUS
136
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF document contains multiple embedded URLs, some of which point to compromised CMS upload storage, indicating a link farm designed to host malicious files. The 'SE_BROWSER_INSTALL_LURE' heuristic strongly suggests the document's purpose is to trick users into installing malicious browser extensions or updates. While no scripts were directly extracted, the overall structure and heuristics point to a social engineering attack aiming to deliver a payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
Heuristics 6
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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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://sonarmusic.hu/up_image/file/medaxujojasogalidibisonok.pdf
- http://wsm.hk/images/uploadfiles/file/nanoperutopomoz.pdf
- http://www.pranabkumar.com/fckimages/file/lexuremisewodubepuvow.pdf
- https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a926d3a3f02---93725558662.pdf
- http://nhs1980alumni.com/clients/878257/File/76647914976.pdf
- http://aranykoronakft.hu/userfiles/file/bananezaj.pdf
- http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a714ed3004d---1365339938.pdf
- https://bonacorsi.it/file/90472900233.pdf
- http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a0d727640d5---41348424696.pdf
- http://szentistvanpatika.hu/upload/file/tegizifobojokavifobufubix.pdf
- http://ampletrekking.com/userfiles/file/55232008327.pdf
- http://businesslegalgroup.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/6317078596.pdf
- http://www.advokat.com/app/webroot/img/fck/file/90262238080.pdf
- https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/b6536375c69eaf9a0ef40880e9e0a579/20905345935.pdf
- https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/c4ojkepea855nccsuq7kmi04vm/10162744967.pdf
- https://123natura.com/stockages/files/zebagorejo.pdf
- https://archltginc.com/wp-content/plugins/super-forms/uploads/php/files/7e9f6a6656bac32691b0242dafbe8811/603050993.pdf
- http://onlineexpert.in/userfiles/file/24505573242.pdf
- http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8071917a0---xutarebav.pdf
- http://universalestetic.com/userfiles/file/81946873555.pdf
- http://bettaletroom.com/file_media/file_image/file/mazokozaniduga.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=how+to+make+cable+tray+offsets
- 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_off0000ced4.bine782120ea9e3440996b8a44996e4e6d54004a84812018b7c4c9703a622ff7974 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCED4 | 10724 bytes |
font_01_sfnt_off0000e797.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE797 | 16792 bytes |
font_02_sfnt_off0000ffa9.bin5aa7f1271049a3d11877fdf6310a9ba6f306da1de23cf383abe47b65f658445d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFA9 | 16944 bytes |
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