MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, forming a link farm. The presence of embedded JavaScript and a high ML classifier score further indicate malicious intent. The primary goal appears to be redirecting users through this link farm, likely to deliver a phishing page or a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://wyslijpaczki.pl/app/webroot/files/userfiles/file/2140108625.pdf
- https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fc0f026528---kutunopolowinipewet.pdf
- https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/7029f6999d2ad999484ebe3ad55461bf/vubelixuk.pdf
- http://oris-am.com/editor_up/towafinupivasup.pdf
- http://rencontres-icare.org/userfiles/file/50181047991.pdf
- http://sokole-tps.pl/userfiles/file/702252476.pdf
- https://aradmissions.com/ci/userfiles/files/mewezasupitukunafus.pdf
- http://l-max.ru/userfiles/file/sezamazepef.pdf
- http://www.jacenter.org/js/ckfinder/userfiles/files/94698028520.pdf
- http://umbabox.com/userfiles/file/53806335542.pdf
- https://bank-kredit.at/ckfinder/userfiles/files/bikajolabupeli.pdf
- http://hzqljsj.com/images/upload/File/92168029908.pdf
- http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1613958fe880bc---safat.pdf
- http://maradonasalud.com.ar/ckeditor/ckfinder/userfiles/files/divovusafabuwadexig.pdf
- http://gourmethousemacau.com/UploadFilesfile///jewezimenow.pdf
- https://karinbentum.nl/uploads/file/66441936253.pdf
- http://goteneplast.se/files/images/file/94287352323.pdf
- http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/161408aee0032d---3038099423.pdf
- http://sz-nuoyi.com/Upload/file/2021090622575428212.pdf
- https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/161437aaab9eae---kajenazosatu.pdf
- http://thementalhealthadvocates.org/files/userfiles/file/46021384807.pdf
- https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136cbfd7df0c---vunipudurapedepijov.pdf
- http://tungalag.mn/userfiles/files/magapobewavowedor.pdf
- http://delfosventures.eu/userfiles/files/kerapimubenikunorabip.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=ppsspp+gold+setup+for+pc
- 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_off0000ef97.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF97 | 16792 bytes |
font_01_sfnt_off000107a9.bin39bbb83c2c9fceca7e649398ffcf31784c5a87cc2880fcd782ee21196e0acf9c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107A9 | 18688 bytes |
font_02_sfnt_off000137d9.bin71560ead06ee34fc76f3ad506b42d7ad57935d7cdd723a8459a076c66547f8b8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x137D9 | 10536 bytes |
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