MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by ClamAV as a phishing trojan and a machine learning model indicated a high probability of maliciousness. The document contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, suggesting it functions as a link farm. The embedded JavaScript likely facilitates the redirection to these malicious sites, which are intended to deceive users.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
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://inwebjor.ru/uplcv?utm_term=difference+between+primary+and+secondary+hyperaldosteronism
- http://austria-ex.com/images/blog//file/mexevudifepumovufaze.pdf
- https://nevisnews.com/userfiles/47393583689.pdf
- http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096693e61e97---wodajapikodop.pdf
- https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/gvaq832kpb98rit3rv9ev1qgrl/56736864082.pdf
- https://lescourailleurs.com/upload/editor/file/gimovoxuwopixav.pdf
- http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/fe686eb57256ac8a05ed7d543c166034/41001796797.pdf
- http://talleresjpg.es/img/file/posib.pdf
- https://varbackaforskola.se/ckfinder/userfiles/files/92493610754.pdf
- https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/5dbadbea40317b32f12cab743e9e7f4b/33646111534.pdf
- https://chatsystem.site/js/ckfinder/userfiles/files/65815950867.pdf
- http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16084774330f5b---41454575657.pdf
- http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16073e81b168d8---kogutefijixixele.pdf
- http://lhs60to70.com/clients/3/32/32806278e47d7e4d905c37b1d6ebf04a/File/wotusepigakagefonezi.pdf
- https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/uadd9n2hm3kvarelg3g8041ner/96304386691.pdf
- http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/ipo27shgg6nvbuc4arad55elm0/naliwaxirigozerepafusaju.pdf
- https://novahealthclinic.ca/userfiles/file/21820418749.pdf
- https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae73b3eab40---wurekivevadagesusin.pdf
- http://sciattella.net/images/file/20027086465.pdf
- http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/160e860bf529b0---dinatom.pdf
- https://grandplaza.bg/uploads/assets/file/54592499667.pdf
- https://satybharat.com/ci/userfiles/files/24128307587.pdf
- https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0cd3377b43---pugavawevugawepapu.pdf
- https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/o82e23daq2k6dhjr09avei3113/43600993604.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_off0000efe6.bina4c07da00b8d84f9893d223e1ecd8746eec05261135f5a656a24e7f34e2d8cdc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFE6 | 16884 bytes |
font_01_sfnt_off00011bfa.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11BFA | 16792 bytes |
font_02_sfnt_off00013411.bin5c9761797b285f8c84b79ee1e7aebdb95cda1a1684252f73f65b8ad576c04f99 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13411 | 11224 bytes |
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