MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of numerous links pointing to potentially compromised websites and a link farm structure strongly suggests an attempt to redirect users to malicious content. The ML classifier also returned a high probability of maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
Heuristics 6
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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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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://vankouwenenmastop.nl/UserFiles/file/sejisibolexu.pdf In PDF document text
- https://eobliecky.sk/userfiles/file/91705774837.pdfIn PDF document text
- https://pathakpharma.in/singhania/downloads/file/zuzukuvogijodawoxeda.pdfIn PDF document text
- http://sooclose.eu/upload/File/51167046586.pdfIn PDF document text
- https://etcbt.com/userfiles/file/torawobemusigilemudoxo.pdfIn PDF document text
- https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/160cd075ecfae4---43207447514.pdfIn PDF document text
- https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/fb5bfaefbef6e9bdd06a01e3323c0d01/9670018825.pdfIn PDF document text
- https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/32951f7a86546968f6b57e61bbaa93eb/bagixekopeduju.pdfIn PDF document text
- https://nguyenvanhuongloc.vn/app/webroot/files/images/pages/files/fegasejukiwisejazazem.pdfIn PDF document text
- https://media-get.ru/userfiles/files/46081709842.pdfIn PDF document text
- https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/rb5qfs8uonj8ogat9nnaq9ds3g/bubigig.pdfIn PDF document text
- https://myupfield.link/wp-content/plugins/super-forms/uploads/php/files/mad9kel6tvnudb2mbh9plh7124/finagewakimevituk.pdfIn PDF document text
- http://porpora.info/imagenes/imagenes_contenidos///navoridevivevazejugul.pdfIn PDF document text
- https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16074373453007---vasotesalovumireroxola.pdfIn PDF document text
- http://tsradviseurs.nl/mailing/images/photo/file/puzererosuxuzikikegopejin.pdfIn PDF document text
- http://chono.mn/uploads/userfiles/files/fuzudabijawulasatedaxe.pdfIn PDF document text
- http://rheumatology.institute/upload/content/file/22554004450.pdfIn PDF document text
- http://s2ipower.com/survey/userfiles/files/wedebogafoloz.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=brothers+and+sisters+have+i+none+riddle+answerPDF 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_off0000dcfe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCFE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f515.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF515 | 10552 bytes |
SHA-256: db2d28119f80a8f1d2a146444e8981021315d8c5536cb0a2a308c09499c1e3dc |
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font_02_sfnt_off00010d2d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D2D | 18044 bytes |
SHA-256: 7bab8f7d406242afc4852854cf50072e30e08ed9b22082f33f3fea0ee17db99f |
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