MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan' and an ML classifier indicated a high probability of maliciousness. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. Although no scripts were extracted, the presence of numerous external URLs indicates an attempt to redirect the user to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9863
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://btcauction.vn/hinhanh/file/48760616729.pdf
- https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/807a2e3243d504fbe45e1a1a1b67af48/998378032.pdf
- https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/89ebbcb06875552745e81e8b35cc0363/buvulupigo.pdf
- https://manualismedicina.hu/fileok/file/63461191659.pdf
- http://hublihorse.com/uploads/userfiles/files/30875589112.pdf
- http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070c303d3885---23662094449.pdf
- http://bygreenpure.com/userfiles/file/67782666640.pdf
- https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/6b305bfafe700fe4e08fd0aeceffa69d/nibikasavo.pdf
- http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/k5hqgfs8hrnju3q8gqif6uh113/rosip.pdf
- http://phanphoiongnhuahoasen.vn/upload/files/pazalezone.pdf
- https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609fc069c93fb---mitegeso.pdf
- http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bc3e13202ca---tigix.pdf
- http://www.tekkoo.net/images/library/File/9480400426.pdf
- https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/4a219c002b254f3880bb509627d1ae7c/texorigej.pdf
- http://araonline.hu/uploads/file/fakugopufovimegu.pdf
- http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b4ae3263fd3---norijepibibi.pdf
- http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16098a7f9c61b7---80814940074.pdf
- https://die-elke.de/cms/elke_page_files/file/botebeluromepupadurimaded.pdf
- https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/cb56a31d1a3d3fe812e133efd181a777/97078344487.pdf
- https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/6e181b418b6827b61d48e589da20f51a/desejozaxubiruzapus.pdf
- https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/a1685044b2a134a399e1461e95871590/zugoliwopexeper.pdf
- https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/16070b7a53b09d---dikuromopezikimevifetug.pdf
- http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609d6bc78a864---15643436094.pdf
- https://bursakaynak.com/userfiles/file/karimibokedogufe.pdf
- https://karinbentum.nl/uploads/file/19270990552.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=how+do+you+get+rock+smash+in+pokemon+ruby
- 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000127ed.bin433ada69be27e9740fb19a279c5bacc7077df1cb8adb3d9b4068dc95d79168cf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x127ED | 17744 bytes |
font_01_sfnt_off00015631.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15631 | 16792 bytes |
font_02_sfnt_off00016e48.binf0191b44dbe6a7ad0334e276bd9eab4ed40f0da0c96fff74d3ab7c43d80d70a4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16E48 | 11440 bytes |
font_03_sfnt_off000188ae.bin72b52c3b2265ae66631c6e12e15ee6e4ca5885cb6d2f10eceb1f1703836349d0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x188AE | 4104 bytes |
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