MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting domains, suggesting it functions as a link farm to distribute malicious content or phish for credentials. No scripts were extracted from this sample.
Machine Learning
- Nyx PDF Classifier malicious score 0.9913
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://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/1387e975de143bc04f2aa6bb1a715cd8/20631172497.pdf
- https://adlinefor.com/home/webagen/public_html/korn/data/file/5660378350.pdf
- https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/f5aa1bad3354fbcf97434be64fc1aaa8/wakikoputitojovib.pdf
- http://mikailang.net/userfiles/file/20210721152450_1894460089.pdf
- http://milkexim.ru/imgeditor/file/31909291994.pdf
- http://budka39.ru/files/83643810022.pdf
- http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1607bd32a894a4---pimasekugo.pdf
- http://www.maderas-navarro.com/ckfinder/userfiles/files/gudesev.pdf
- http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/ifffrafl2o25bna3090o33okp3/jusiwimopo.pdf
- http://palakkadtourism.in/ckfinder/userfiles/files/woleguxemijofowum.pdf
- http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d52b0dc7c9---boxow.pdf
- http://yjccnc.com/upload/files/53207711397.pdf
- http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/leu9itj3engk75e4nan790kgh7/52773358362.pdf
- http://macabrey-luthier.fr/data/Files/63923365381.pdf
- https://lienlacanien.com/img_pages/file/77509427122.pdf
- http://polipack.ru/content/file/18656383332.pdf
- https://iphastkala.com/userfiles/file/rediwurod.pdf
- http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607419e43def6---nufurakefet.pdf
- http://villaturri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160809e5f262f4---juviwe.pdf
- http://lex-ter.ru/admin/ckfinder/userfiles/files/4440295782.pdf
- https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/eb2f3fd45a89a92d561b379625340e8f/99412499264.pdf
- http://zhuoer.ltd/userfiles/file/vezalarup.pdf
- https://etonbio.com/newsLetters/images/file/jisetiguzetaworuz.pdf
- https://feniks9.ru/ckfinder/userfiles/files/64385096288.pdf
- http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075f8548532a---38867390102.pdf
- http://fkhd.cz/data/img/sakavikof.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=problemas+de+investigacion+en+sociologia+urbana+manuel+castells+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_off0000f91b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF91B | 16792 bytes |
font_01_sfnt_off00011132.binca300633ca0504889786ca3c40857b07f8230e399a004962bfcdd85b10314832 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11132 | 11268 bytes |
font_02_sfnt_off00012b34.bine09e83597e9711108120bf2b25b06793d4aec7ac59ac4a561dcf0b919744b94c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12B34 | 18788 bytes |
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