MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, presenting numerous URLs that likely lead to phishing sites or further malware downloads. The presence of multiple external URIs and links to compromised CMS uploads suggests a coordinated effort to distribute malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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://synerhu.ru/uplcv?utm_term=analogous+structures+in+plants PDF link annotation
- http://www.chp.pl/ckfinder/userfiles/files/10327908528.pdfIn PDF document text
- http://mastervgtour.by/var/upload/file/pobemoxavamokiliwoboxedu.pdfIn PDF document text
- https://etonbio.com/newsLetters/images/file/13753993598.pdfIn PDF document text
- https://www.kuwaitpolyurethane.com/ckfinder/userfiles/files/49947141056.pdfIn PDF document text
- http://kingcraftviet.com/uploads/ckfinder/files/wunukutuguru.pdfIn PDF document text
- https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/0a25385dea82318daa67d3040008033b/rakobubulexapukaxu.pdfIn PDF document text
- http://shengyaweb.com/uploadfile/file/2021090212074235.pdfIn PDF document text
- https://www.barrau-philippe-sedeco.fr/ckfinder/userfiles/files/82200792063.pdfIn PDF document text
- http://hanyangsteel.com/files/fckeditor/file/183140222361317f05b3601.pdfIn PDF document text
- http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613641b514400---tibuwopabexotir.pdfIn PDF document text
- http://355353.ru/userfiles/file/maxutugonazotupegijopif.pdfIn PDF document text
- http://immopolignano.lu/images/94874742169.pdfIn PDF document text
- https://olgunbey.com/upload/ckfinder/files/5327618592.pdfIn PDF document text
- http://floramarble.com/uploads/vevogibofupupufoj.pdfIn PDF document text
- https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16143ce430c0ae---lozesig.pdfIn PDF document text
- http://bolt-go77.com/fckeditor/userfiles/file/36244647086.pdfIn PDF document text
- https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/9a576d41a9d30105cb7ebfa8faa4f7be/11076412105.pdfIn PDF document text
- http://friulanapanini.com/images/file/61705427507.pdfIn PDF document text
- http://vansuloi.com/uploads/userfiles/file/24798357824.pdfIn PDF document text
- http://kanchanaspa.com/ckfinder/userfiles/files/93348894277.pdfIn PDF document text
- http://evevoyance.fr/adh/.-/file/tegidixujivodof.pdfIn PDF document text
- https://aordonez.com/images/contenidos/files/berutatatisotepu.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_off0000d164.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD164 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e976.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE976 | 16520 bytes |
SHA-256: 8d8922b0ea7ddfe23d1cec2bc44a91564363087282ebc2f6ce5ec7a3a07dbcf9 |
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font_02_sfnt_off00011302.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11302 | 10632 bytes |
SHA-256: 81c72e39fb295c7f9ff5c70dacc199dc0d3f345f51924593d9bd856bd02437b8 |
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