MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and a large number of external URIs, many of which point to compromised CMS uploads or disposable hosting. This suggests the file is designed to act as a lure, directing users to potentially malicious content or phishing sites. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://catamma.ru/uplcv?utm_term=words+containing+oe+sound
- http://papinchess.ru/userfiles/file/tudes.pdf
- https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/upofrqiaiitimsupmfebtk2158/11150416279.pdf
- http://evpltravel.com/xv_image/file/fejalugulujaneg.pdf
- https://cafeau1ait.xyz/js/ckfinder/userfiles/files/12543150657.pdf
- http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16078f0961eea4---82607168610.pdf
- http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cca34442829---34639511689.pdf
- https://allmassage.net/upload/file/20210531080011.pdf
- https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/f80ce75acb949a13bcadf6d319682670/36844839399.pdf
- http://faxik.online/ckfinder/userfiles/files/sidabovonap.pdf
- http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160912a3d3f13d---75102506511.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609285923d104---jitipukexitulutuz.pdf
- http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16090e072998dc---xukesojevebivabupozolor.pdf
- http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16094533d4fe21---rumusarodafupaninevep.pdf
- https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096c8ffd5508---lutakufewuzekikiduvebufi.pdf
- http://autavrabek.cz/obrazky/file/medirirukesapoxezakisi.pdf
- https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a6cf5a7a29a---bosaxakux.pdf
- http://andlupa.com/userfiles/file/80976472044.pdf
- http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a1a8574b78d---zafigiwonanolukunovelupo.pdf
- http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6b4597e538---67087591054.pdf
- http://joyearland.com/ckfinder/userfiles/files/61021666082.pdf
- http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160756ce3efc4d---digupiwosariwozezusaroze.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_off0000f0d8.bin46a7c1543df6b842ce1046b1a285b1f5d5c041ca3de7eb3b9dc196d066c3b35d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0D8 | 10592 bytes |
font_01_sfnt_off000108ff.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x108FF | 16792 bytes |
font_02_sfnt_off00012111.bin97761be776b725b333d0300393dc478947eddee42fa6feb8cd49ea7783a8f9c2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12111 | 23300 bytes |
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