MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous URLs that form a link farm, with many pointing to disposable hosting or compromised CMS uploads, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a malicious document, likely delivered via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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 https://inwebjor.ru/uplcv?utm_term=wireless+radio+communication+pdf PDF link annotation
- http://ahchala.com/img/file/57193593127.pdfIn PDF document text
- http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1607035ef5c843---gugawogeduje.pdfIn PDF document text
- http://inbjnews.com/data/cheditor/0603/files/kujubo.pdfIn PDF document text
- https://vandolderskb.com/images/usr/devewufuzuve.pdfIn PDF document text
- http://wo-kop.pl/userfiles/file/fejawumibimufusulagowirad.pdfIn PDF document text
- http://sluchatka-shop.cz/files/upload/files/latutezosugipoxa.pdfIn PDF document text
- http://upperdublin1970.com/clients/3/3b/3b2fb281f4756d03d37a29c41a8c1d95/File/sogokilesaratisadalotule.pdfIn PDF document text
- http://color-gateway.com/userfiles/file/jakimovifujir.pdfIn PDF document text
- https://aldurra.ly/images-editeur/img/file/zadako.pdfIn PDF document text
- http://chayka-svg.ru/files/zefif.pdfIn PDF document text
- https://aljazeerahdrilling.com/userfiles/files/jajefawizunupokarem.pdfIn PDF document text
- http://dinskayarealty.ru/media/file/4727271669.pdfIn PDF document text
- https://aduanaldelvalle.com/userfiles/file/nuzadejubafudolefikurip.pdfIn PDF document text
- https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/6379f1f90fe0c770384562ab2631dd00/fabidagomuz.pdfIn PDF document text
- https://kimcert.net/E/file/84785160049.pdfIn PDF document text
- https://georeno.ca/userfiles/files/49774522335.pdfIn PDF document text
- http://tourister.kr/userfiles/file/97341927303.pdfIn PDF document text
- http://studiolegalebisantis.it/userfiles/files/fakiropifinuxibajate.pdfIn PDF document text
- https://wisestudentz.com/userfiles/file/rifoj.pdfIn PDF document text
- http://podolsk-kondicionery.ru/upload_picture/file/fixim.pdfIn PDF document text
- http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/160e0982e87bc8---44047079689.pdfIn PDF document text
- http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074a6b4c0751---8613347202.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_off00010107.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10107 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00011919.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11919 | 18244 bytes |
SHA-256: 53e21f7f29de8c859e9b657f50c3b5899cfc52b19345dce41749bfa0f24cb51f |
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font_02_sfnt_off00014865.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14865 | 10876 bytes |
SHA-256: 38224dc3c0d41e1ce46cd1302c23df6fe4bca480dc1c2bdd341dd8bd1832b90c |
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