MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URLs, many pointing to compromised CMS upload directories, suggesting a phishing or malware distribution scheme. The PDF structure and embedded links are indicative of a link farm designed to redirect users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://wastran.ru/uplcv?utm_term=essential+cell+biology+fifth+edition+pdf PDF link annotation
- http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16108919a9b4a7---lusozaneto.pdfIn PDF document text
- https://roc.mn/uploads/files/powodirirovek.pdfIn PDF document text
- https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607edced10872---51120124724.pdfIn PDF document text
- https://coonvalleycc.com/userfiles/file/lisotimaxojisupesuzasewuf.pdfIn PDF document text
- https://vico-domrep.com/ckfinder/userfiles/files/sevop.pdfIn PDF document text
- http://flirdining.com/uploads/files/nevumuxobof.pdfIn PDF document text
- http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/8ugclnrb8dp767m2krre8p3ui5/29976172830.pdfIn PDF document text
- http://archpiudue.com/userfiles/files/revuvaxuretazakovi.pdfIn PDF document text
- http://xyr59.com/filespath/files/20210903081411.pdfIn PDF document text
- http://eths1967.org/clients/6/6b/6b000f7c2bca5b3a89f93fde6b54c5e6/File/fidojiporotuvupekarerex.pdfIn PDF document text
- http://bogieclassof67.com/clients/71235/File/nubexinowagutufini.pdfIn PDF document text
- https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/04dcbdd97354440d6f1aebcba993ed5a/21291947965.pdfIn PDF document text
- http://orchid-daikanyama.com/userfiles/file/jaxoronowuvojuj.pdfIn PDF document text
- https://easypayindia.in/userfiles/file/95924400445.pdfIn PDF document text
- http://humanlitech.com/files/files/22286074595.pdfIn PDF document text
- http://cappellastudio.it/userfiles/files/mevezamulo.pdfIn PDF document text
- http://ferrogep99.hu/static/media/file/werefi.pdfIn PDF document text
- https://activepymes.com/pub/file/xuvon.pdfIn PDF document text
- https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/f1a4hi4g2u77836nrccqe35gof/12809620592.pdfIn PDF document text
- http://iccjsc.com/images/uploads/files/37600687317.pdfIn PDF document text
- https://motelandratecuci.ro/userfiles/file/melefigimomaxomipelokogo.pdfIn PDF document text
- http://classicalgardenornaments.com/uplds/file/bosalolakexonelunuxex.pdfIn PDF document text
- 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_off0000d42f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD42F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ec41.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC41 | 17336 bytes |
SHA-256: 32b5d362cda270fa3bf927b7f990af3b6f417d1d249291dbf1a24a5942c310f0 |
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font_02_sfnt_off00011951.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11951 | 11036 bytes |
SHA-256: ec7c6683ea6bf27b1744b07d98f47387dbc7779c0f414f42f3e0e30d0330f328 |
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