MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains numerous embedded URLs that function as a link farm, directing users to potentially malicious websites. Several of these URLs point to compromised CMS upload directories, indicating a tactic to host malicious content on seemingly legitimate sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9986
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://inwebjor.ru/uplcv?utm_term=paired+t+test+for+non+normal+data PDF link annotation
- http://irollee.com/userfiles/file/bejavenujutotuzodiw.pdfIn PDF document text
- https://mercerapparelss.com/userfiles/files/zezotipawawopesajela.pdfIn PDF document text
- http://esipro.fr/userfiles/file/tinigegemuzubadetetep.pdfIn PDF document text
- http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/16144b92d5f86b---nuvanazetadawukuzaletolu.pdfIn PDF document text
- http://stilistspb.online/public/files/uploads/files/81285579800.pdfIn PDF document text
- http://montpellier-businessplan.eu/mbp/upload/images/images/upload/ckfinder/kononerunu.pdfIn PDF document text
- http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/5db2e4d7c6b29824c2cc037e325f2e56/lurotodadebujolenu.pdfIn PDF document text
- http://www.oneworldkarate.com/fckeditorimages/userfiles/file/42697184206.pdfIn PDF document text
- http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614b653a15380---24119507416.pdfIn PDF document text
- http://baltic-rt.ru/ckfinder/userfiles/files/35424542027.pdfIn PDF document text
- http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16145914e5af09---dawiv.pdfIn PDF document text
- https://sanruouvang.net/images/uploaded/file/43601431108.pdfIn PDF document text
- http://podhoru.cz/userfiles/file/50426096133.pdfIn PDF document text
- http://compufoxmail.com/FCKeditor/editor/filemanager/connectors/userfiles/file/nineguj.pdfIn PDF document text
- http://ativn.com/upload/file/81810471012.pdfIn PDF document text
- http://arebiatours.com/uploads/files/84519816853.pdfIn PDF document text
- http://tolltisztitas.eu/userfiles/files/zamimowapikorisisuwopomag.pdfIn PDF document text
- http://peggylittlelawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/87077572724.pdfIn PDF document text
- http://esistore.be/userfiles/file/vikenozunovozazokotibeluz.pdfIn PDF document text
- http://aa-nusd.jp/tamojefus.pdfIn PDF document text
- https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/l3e8o3jgmaf1mf59oskmlnmhrk/41318312957.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_off0000b0ea.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB0EA | 15540 bytes |
SHA-256: 239f30462f90579c7537c676afa038adb45d635c641d052910604ed098a5821e |
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font_01_sfnt_off0000d844.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD844 | 10516 bytes |
SHA-256: 79228a8c55fbb72912bc9f63875e9b6ca87344abaa369977c99958769ac786b1 |
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font_02_sfnt_off0000f029.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF029 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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