MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links pointing to compromised CMS uploads and disposable hosting, suggesting a link farm designed to redirect users. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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://smidgel.ru/uplcv?utm_term=enzyme+lab+questions+and+answers PDF link annotation
- http://irvine.songhakbbq.com/uploads/files/sonidenozuruxufofuzamanok.pdfIn PDF document text
- https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/1614602fa1a393---45031247505.pdfIn PDF document text
- https://tssch.in/tssch/application/admin/uploads/file/48832559528.pdfIn PDF document text
- https://alirezamirmohammadi.com/images/upload/files/dirujosilinixixivosewo.pdfIn PDF document text
- https://xn--z4qq44i.xn--kpry57d/upload/actfiles/zazeg.pdfIn PDF document text
- https://hsse.hssanesteban.cl/files/marepurugejixumikunoza.pdfIn PDF document text
- https://naveenent.com/administrator/imagetemp/file/vigebopereko.pdfIn PDF document text
- http://lagunaapartman.hu/images/user/file/40397033883.pdfIn PDF document text
- http://jfhcoaching.com/userfiles/files/xubutawuku.pdfIn PDF document text
- http://sudeoksa.net/userfiles/file/20210901115753.pdfIn PDF document text
- http://czminghe.com/upload/files/23660301229.pdfIn PDF document text
- https://marblobaths.com/app/webroot/img/files/kalepolavulenudebi.pdfIn PDF document text
- https://hotelcorona.ro/files/pifazixopemewujopa.pdfIn PDF document text
- http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132057dacfc9---kowanisaxowijovi.pdfIn PDF document text
- https://noursportevents.com/wheelmarine/userfiles/file/jazuramejakopefos.pdfIn PDF document text
- http://fc-junajted.com/upload/datoteke/78710043394.pdfIn PDF document text
- http://emons-verlag.net/testarea/cwsCMSlight/media/files/99030377526.pdfIn PDF document text
- https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16151144916032---12403815153.pdfIn PDF document text
- http://studiotecnicopinto.it/userfiles/files/zelebeduloduf.pdfIn PDF document text
- http://3e3i.com/UserFiles/file///dulamusadalifafevudat.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_off0000ca48.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA48 | 11040 bytes |
SHA-256: 6b072a316b9cce3d3dfc297f9d4da1ea10fae702bd8d11539fda9887a7c0fd6d |
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font_01_sfnt_off0000e3d4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE3D4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000fbe6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBE6 | 19752 bytes |
SHA-256: 3ff68b13351d9053f31cb4ecdd32e9639871f3473eb6d6a6cf0dbeb052142bee |
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