MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document functions as a link farm, containing numerous embedded URLs that point to compromised WordPress sites. These sites appear to host further malicious PDF files, suggesting a multi-stage attack designed to distribute malware or conduct phishing operations.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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://catamma.ru/uplcv?utm_term=sami+padal+tamil PDF link annotation
- https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071ba3a34fbc---42850970133.pdfIn PDF document text
- http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e05aa1ec1f---42529475929.pdfIn PDF document text
- http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160881ca4f1894---xoluzitabubuxusemopu.pdfIn PDF document text
- https://amrapalispot.com/userfiles/file/86107354964.pdfIn PDF document text
- http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16075893f7a924---dupitetimonamosixisa.pdfIn PDF document text
- http://zulassungsservice4you.de/bilder/file/41672705031.pdfIn PDF document text
- http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16077098d4c65b---24783807178.pdfIn PDF document text
- https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16085e99264b67---filugi.pdfIn PDF document text
- https://welltowork.org/wp-content/plugins/super-forms/uploads/php/files/2fff73ddea00c7de8ea7fc7492b5f68b/3018568329.pdfIn PDF document text
- http://cck-brno.cz/ckfinder/userfiles/files/pividonuzevetojiv.pdfIn PDF document text
- http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4e591648a---pugonuwuxumijufumejeb.pdfIn PDF document text
- https://cowichanmusicfestival.com/userfiles/file/tubosolofunizofomemi.pdfIn PDF document text
- https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abfe9575d19---rutijelojurigifis.pdfIn PDF document text
- http://acecaalcoy.com/userfiles/file/larelaxopimatilafogef.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0001d294.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1D294 | 4932 bytes |
SHA-256: 242d411c7598c8b718008917ac59e2031779354998caaf3d3eecb5f992b9f354 |
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font_01_sfnt_off0001e346.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1E346 | 5832 bytes |
SHA-256: ffdc35c648826b9e580157b0fea1c1f4e0cce38dceaec5c415834209acb2a6a3 |
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font_02_sfnt_off0001f5ef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1F5EF | 10952 bytes |
SHA-256: 35e5c79bce6215815e4f7a2f663be5c100ea6670cc9cfcf692648769cbe15f00 |
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