MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is structured as a link farm, likely to distribute malicious content or phish for credentials. The ML classifier and ClamAV detection strongly suggest malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://ketchas.ru/uplcv?utm_term=unparalleled+meaning+in+tamil
- http://sgd42.ru/userfiles/file/leziwabusegiguwe.pdf
- http://satyavnetworks.com/fck_upload_images/file/68338371932.pdf
- http://yingtailong.com/upload/file/210919080733182944bi98ixhhgikj.pdf
- https://path.mn/userfiles/files/zosogixenowija.pdf
- https://postelezmasivu-liberec.cz/ckfinder/userfiles/files/taken.pdf
- https://leo.tw/upload/ckeditor/files/vuzotofesidaluvupevata.pdf
- https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/f75a5473df846f4a75477d74b19c160b/xupawudasifaweba.pdf
- http://elskup.pl/images/assets/file/kinexatana.pdf
- https://www.gpaci.org.br/cms/ckfinder/userfiles/files/28051877310.pdf
- http://sgo-bage.com/public/files/files/91188624175.pdf
- http://hytechcommunications.com/userfiles/file/tamipotubodarojamafemuge.pdf
- http://chinalabware.es/d/files/59560927726.pdf
- https://kudusde.org/resimler/files/disifoxavomokorupakes.pdf
- http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613717da065f3---74576159547.pdf
- https://safetyhanoi.com/userfiles/file/kofuxamiwuwovezofewuleduz.pdf
- http://topoint.net/userfiles/fckFile/20211006073628.pdf
- https://loppisidjupdalen.se/images/uploaded/file/8025483768.pdf
- http://kurumakaitori-one.com/js/upload/files/3712027015.pdf
- http://gomsuhoangminh.com/app/webroot/uploads/files/26627490168.pdf
- http://3e-recycling.ru/app/webroot/filesfiles/25371953378.pdf
- http://thrifthelp.com/flash/thrifthelp.com/file/jididetuvuwufijago.pdf
- http://cheapmarkt.com/userfiles/file/vafiburuwolazifokibulo.pdf
- https://lacaune.hu/userfiles/file/88825668234.pdf
- http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613759161af83---63238814683.pdf
- https://www.suep.gr/ckfinder/userfiles/files/jasedamo.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_off0000ebfc.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBFC | 16792 bytes |
font_01_sfnt_off0001040e.bin924d3ada451f09d9fcd46240de61e41838f2f92d90efede15aa399604b8df8c3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1040E | 20956 bytes |
font_02_sfnt_off00013ade.binf9a673aa223cf75a28e83375a5e800495efc7c569b8ea534f469ee9b74bc8361 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13ADE | 10456 bytes |
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