MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link farm pointing to numerous compromised WordPress sites, which in turn host other malicious PDFs. This suggests a multi-stage attack, likely initiated via spearphishing, where the initial PDF serves as a lure to download further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/7k7aduvstqj26ak6viaffqaafa/korotodojodimekunewav.pdf
- https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/16094ca8d4fef3---satujuxu.pdf
- http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/s73q05bh7eehur8o95ltenoc76/3617064929.pdf
- https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608b3c89cb4e8---nesusarepodedidojipafoxu.pdf
- https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/9fmkm7s6dg08qcjnrcfq8m292j/5703558373.pdf
- http://adria-ex.com/images/blog//file/jebinolinano.pdf
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/377ff1f38ad8c7b101e6ae0a813d4092/87027426661.pdf
- http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074010dcb308---dutumuxisibegogufuk.pdf
- http://la-roofers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160bd8e0179de9---84965333477.pdf
- http://altelaw.com/uploads/image/file/xebori.pdf
- http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4de84ab45e---zofowi.pdf
- https://www.groupenahno.com/wp-content/plugins/super-forms/uploads/php/files/kt50ei25kp3qgg4c7pjd3j3juh/vefefalevazabidos.pdf
- https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a12b206327a---40052351659.pdf
- https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c65237d207e---43550818188.pdf
- http://22743333.com/userfiles/files/menukurovabiselekegej.pdf
- http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/160775a61288b0---40914981463.pdf
- https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd16496b389---56358103855.pdf
- http://media-production.net/admin/ckfinder/userfiles/files/jesebumakosajun.pdf
- https://thuaphatlaihanoi.net/uploads/files/34866992211.pdf
- http://www.knickmeier.net/images/pageimg/file/miwavusipinabuwogojij.pdf
- https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160880287aa0ba---95282960754.pdf
- http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a340b6ee408---mozoxinavamo.pdf
- http://chataphan.com/file_media/file_image/file/61023477545.pdf
- https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/i704j771fe9j6a5auocd9i4034/93820755934.pdf
- https://detectiveoffice.net/userfiles/file/tiwenidimizaje.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=m39+bayonet+for+sale
- 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_off0000ebee.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBEE | 16792 bytes |
font_01_sfnt_off00010400.bind1a62316f7ae5fe5b2f00805af59e48b7f6b85e71c1705b62c862f4c0dcdf57c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10400 | 18276 bytes |
font_02_sfnt_off000133a9.binb4bf089a3998a25de3dd6975ce7d1feaffaf7616cb6129e6811eeff5083a60ab |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x133A9 | 10704 bytes |
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