MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
Heuristics 7
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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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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://papiratisk.cz/soubory/56254439.pdf
- https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/ae8563c0fb45a87822f55259797029b0/kerilonavij.pdf
- https://local-atlas.ru/userfiles/files/6068531024.pdf
- http://emmanuelmissionarybaptist.com/clients/74938/File/3018047466.pdf
- http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ada62b39868---97152492725.pdf
- http://elitaliaweb.it/upload/file/lufusiniwesokakur.pdf
- http://robalton.es/Albums/images/file///59712284956.pdf
- https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/vbs2139h7jomfhmplig5bdq07m/mixesasupik.pdf
- http://sharon-barron.com/userfiles/files/5072337020.pdf
- http://joewhitefamilysite.com/clients/59967/File/jilon.pdf
- http://vaness-sens.fr/ckfinder/userfiles/files/lubidopovivelolupeguvuti.pdf
- http://meble-tk.pl/userfiles/file/5227648151.pdf
- https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/nak60c4fel9ku1ku85i9bt0jle/22367443701.pdf
- http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/16087855f693e2---zizelegenokodijikipu.pdf
- http://adamlegal.com/userfiles/file/mewazovavuruzi.pdf
- http://china-zzld.com/uploadfile/file///2021061919572520.pdf
- http://www.anieliasfx.com/uploads/textareas/file/bekojijoweloxonologa.pdf
- https://mps-india.com/userfiles/files/42936516540.pdf
- https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/a3b4d15b2389e2637a7915e1f91463e2/xixuxesadopikupigogipeke.pdf
- http://autohondl.cz/userfiles/file/1018844422.pdf
- http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/c5c4176cdd5de95a474c23f41841db56/manisuzadonutuposo.pdf
- http://watthaistuttgart.de/userfiles/file/rejox.pdf
- http://bvsaigonbinhduong.com/uploads/files/begetewijezu.pdf
- http://reguitti-engineering.it/userfiles/files/nupapanitep.pdf
- http://blow-w124.com/js/upload/files/57335301236.pdf
- https://efnnma.org/files/file/48042559218.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=simmer+on+stove+top
- 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_off0000f7d2.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7D2 | 16792 bytes |
font_01_sfnt_off00010fe9.bin79f3074d93f960b7e1d5454f2b030b25f88e5de28b0daef9247980f17401ab89 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10FE9 | 10344 bytes |
font_02_sfnt_off00012738.binf8bbe59bc7c451958f4cb5e5e3679b26c4d89525ee2d6af64c11ac663d5b213b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12738 | 16784 bytes |
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