MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or are part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. The file's structure as a link farm suggests it's intended to lure users to external malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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 http://zvezda-rostov.ru/ckfinder/userfiles/files/navamejakarirem.pdf
- http://inter-travel.hu/_user/file/11780756241.pdf
- https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/52drcqe0ek6e2em93afrqkebgr/45037838619.pdf
- http://thebeautyofdesign.nl/ckfinder/userfiles/files/dipaguvazorerefewelenizu.pdf
- http://audiencefertilization.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/sijivuxive.pdf
- http://myflora888.com/ck_files/files/wurasazifodogufozojem.pdf
- https://volnynaklad.cz/data/file/39586470052.pdf
- http://www.findvoters.com/userfiles/file/11304183558.pdf
- https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/79fcc6c68c5f03e536a3e372772564d6/30345873844.pdf
- http://urbanelect.com/userfiles/file/kirizubepulakagap.pdf
- https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cb1361ec42---87287306406.pdf
- https://lifesmart.lifesmart.ro/ckfinder/userfiles/files/tukejubebetejotenatuf.pdf
- http://sbkf.org/files/files/tefuwosab.pdf
- http://sudeoksa.com/userfiles/file/20210912085629.pdf
- https://behagi.eus/files/galeria/files/56174552353.pdf
- http://aktifbant.com/resimler/files/nipofijiniw.pdf
- https://geniodelweb.com/file/49972611071.pdf
- http://nutranghongngoc.com/media/ftp/file/nutixudamofofu.pdf
- http://primebrokeragetx.com/ckfinder/userfiles/files/dolerilizunomigudedoxekad.pdf
- http://abogadosaguilar.com/ckfinder/userfiles/files/97537482558.pdf
- http://nfc.soo.jp/file/zejibasijubikofoziso.pdf
- http://mail.me.ntou.edu.tw/ckfinder/userfiles/files/20210907_223115.pdf
- http://kassa.pl/userfiles/file/paramogaguk.pdf
- https://efficimm.fr/userfiles/files/52355379681.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=c+tutorial+pdf+free+download
- 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_off0000bb05.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBB05 | 16792 bytes |
font_01_sfnt_off0000d31c.bine24cd76555ac598491cba15b582f9587379264ed0b5e6a8a377a333565abfdc2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD31C | 10540 bytes |
font_02_sfnt_off0000eb4f.bin89b632528d49109704b832e2f46e642fda7be5437bbe370724dad1b9f6f84a1f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB4F | 16788 bytes |
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