MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or are part of a link farm hosted on disposable domains. ClamAV and ML classifiers also flagged this PDF as malicious, specifically identifying it as a phishing trojan. The primary function appears to be redirecting users to external sites, likely for malicious purposes such as phishing or further malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9804
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://gruaszarate.com/ckfinder/userfiles/files/tamodabefemeteravavula.pdf In PDF document text
- http://www.kowel.com/ckfinder/userfiles/files/1631592701.pdfIn PDF document text
- https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/16132874930c2b---vumirumu.pdfIn PDF document text
- http://yunnanyingxiang.com/ckfinder/userfiles/files/kujijadunukofenekive.pdfIn PDF document text
- http://czyxchem.com/upload/files/67904138053.pdfIn PDF document text
- http://kirakuramenandsushi.com/uploads/files/zetag.pdfIn PDF document text
- http://barrybusiness-crm.com/ressource/devis-photo/files/mitigakowupodebuzu.pdfIn PDF document text
- http://precisao.org/files/files/gaxolazorunasep.pdfIn PDF document text
- https://sunwayhk.com/louis/STARKGROUP/ckfinder/userfiles/files/kokeguvaraxom.pdfIn PDF document text
- http://tunglamgarden.com/images/fck/file/5155729229.pdfIn PDF document text
- https://samirkumarpaul.com/ckfinder/userfiles/files/noxupakenek.pdfIn PDF document text
- https://larustt.com/upload/ckfinder/files/22450860198.pdfIn PDF document text
- http://laibros.com/ckeditor/userfiles/files/58826281434.pdfIn PDF document text
- https://greenfuturevietnam.com/Upload/files/70259609524.pdfIn PDF document text
- https://karthikaspices.com/uploads/file/kupugenomuzofa.pdfIn PDF document text
- http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161493dc174de6---vexidikowomibunu.pdfIn PDF document text
- http://zatuchlina.cz/upload/file/9198456279.pdfIn PDF document text
- https://www.idd.no/ckfinder/userfiles/files/zimovozusugenopugumunewek.pdfIn PDF document text
- http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1613436ad05f1e---74445349284.pdfIn PDF document text
- https://doina.md/fckeditorfiles/file/46931935003.pdfIn PDF document text
- http://teleinwestor.pl/userfiles/file/16835409309.pdfIn PDF document text
- http://ykzn8.com/upfiles/editor/files/58086673610.pdfIn PDF document text
- https://granitabrasive.ro/editor_up/9461607941.pdfIn PDF document text
- https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/bcdcb39edffcea6fa9b004894f1c1524/32279796904.pdfIn PDF document text
- http://3e3i.com/UserFiles/file///80380511431.pdfIn PDF document text
- https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/94f5de32ae84d2b68f6de0c63095ad96/levupokid.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=confessions+of+an+advertising+man+pdfPDF 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b832.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB832 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d044.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD044 | 15976 bytes |
SHA-256: 4bf1fe0e2c013c079edbf2651de2751647cf0e4801ee2012efef5e1f25a00ae2 |
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font_02_sfnt_off0000f8b3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8B3 | 16232 bytes |
SHA-256: 01cd0e4798e93fb086042d610f43ddeed7bf091af48aa863f5c4a4f61b651684 |
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font_03_sfnt_off00010e8d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E8D | 10892 bytes |
SHA-256: 5e82424588372555e29c4e2267a394d2dfb6be54b937bace313c883e880e3dd0 |
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