MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document was identified as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains a link farm pointing to numerous disposable domains and compromised CMS uploads, suggesting a phishing or malware distribution scheme. The presence of embedded URIs and the nature of the heuristics strongly indicate this file is part of a spearphishing campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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 http://z500.si/files/4862510224.pdf In PDF document text
- http://vin-baietii.ro/ckfinder/userfiles/files/43300305652.pdfIn PDF document text
- http://klick-tipp.info/ckfinder/userfiles/publics/files/40118393773.pdfIn PDF document text
- https://www.azembay.com/wp-content/plugins/super-forms/uploads/php/files/h98oa9src98t4cfiitjbpnjt32/jekepe.pdfIn PDF document text
- https://groupburuemas1.com/contents//files/raxevuvubutoroxenum.pdfIn PDF document text
- https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086fff74ef33---42075877260.pdfIn PDF document text
- http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b503fc8cdbb---70897369216.pdfIn PDF document text
- http://chaodontuonglai.vn/uploads/ck_upload/files/doked.pdfIn PDF document text
- http://xn--80aaffebba2apgigwiiececnggk9e4k.xn--p1ai/pict/file/rirunalowugoterekebunava.pdfIn PDF document text
- https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/mf2bhhp8mflklqnkbii45vqqb0/murivu.pdfIn PDF document text
- https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/0a52bf4b3f1b6862e99303cf40a9d894/niwovodot.pdfIn PDF document text
- https://hondaotohaiphong.vn/upload/files/49794445406.pdfIn PDF document text
- http://etre-belle.su/images/file/jojalukozu.pdfIn PDF document text
- http://casavacanzesanvito.eu/userfiles/files/19020816416.pdfIn PDF document text
- http://cortabellanews.com/userimages/fevokusefe.pdfIn PDF document text
- http://sancheonglittletheaters.com/upload/userfiles/2021/08/files/210818223502.pdfIn PDF document text
- https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609860b8804ab---saferuxibubesi.pdfIn PDF document text
- http://antifftech.com/uploadfile/file///2021070104333713.pdfIn PDF document text
- https://inoxquochoang.com/app/webroot/files/images/pages/files/piwopewamapisin.pdfIn PDF document text
- http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16081d0c4182d0---vufawu.pdfIn PDF document text
- http://criollo-cocoa.com/userfiles/file/zofanaviligudivuta.pdfIn PDF document text
- https://zapret-rf.org/web/img/podborky/files/dovajunumusib.pdfIn PDF document text
- http://phantasos.org/userfiles/file/wadekep.pdfIn PDF document text
- http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a15c4ed9751---pupajudizelo.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=toltec+art+of+life+and+death+pdfPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ec5a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC5A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0001046c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1046C | 17664 bytes |
SHA-256: fc00cda6f77f7f60dd83e711e4d0aec5e3f952898ef6b58fa3edfe419ae40d45 |
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font_02_sfnt_off000131d3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x131D3 | 10512 bytes |
SHA-256: e2b88ec18dcb758e7da1076a53ea808c0d44fbef5ebd1aba17bdae205773261e |
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