MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress upload directories and disposable hosting sites. These links likely serve as a distribution mechanism for further malicious payloads or phishing content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://krisoc.ru/uplcv?utm_term=what+does+the+dependency+theory+explain PDF link annotation
- http://nowyhotelik.pl/userfiles/file/dijefole.pdfIn PDF document text
- https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/2tsbge625r0lal3opsdatpc4v4/94453695044.pdfIn PDF document text
- http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/n01mv8eqiekv2jgljdm4d5v932/24788937837.pdfIn PDF document text
- https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088179203e2b---7975729363.pdfIn PDF document text
- http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/f3928cf030a5f4a540078b424e7b054f/gupexogofoxatupovi.pdfIn PDF document text
- http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c47ff3406c---najovanorigogogosegamaxu.pdfIn PDF document text
- http://banphimchuot.com/userfiles/file/paduxep.pdfIn PDF document text
- https://aquafilling.com/userfiles/file/72792221194.pdfIn PDF document text
- https://baoholaodong24.com/userfiles/file/xodik.pdfIn PDF document text
- https://securitydm.rs/slicice/file/kemakoru.pdfIn PDF document text
- http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f17e63370a---85657254985.pdfIn PDF document text
- http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160921fa0a2452---11196966029.pdfIn PDF document text
- https://micast.de/wp-content/plugins/super-forms/uploads/php/files/r0gla1dai0f2ige77ie7ndunjh/16814083735.pdfIn PDF document text
- https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/ghedga35h8baekdcolbakj6rgl/23229966843.pdfIn PDF document text
- http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/erajk9lj29fo5oqengqmtmgrrh/26311374997.pdfIn PDF document text
- https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1608ffbcf31975---rogotamaxabibi.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000cd45.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCD45 | 5344 bytes |
SHA-256: 9b1580ee070acd6bc1901dc1ca73c6d42529245f00813943fa86ee7bbc8d295c |
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font_01_sfnt_off0000df83.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF83 | 10260 bytes |
SHA-256: a6adcd9d4fe23fb9cc974ab55e8cc6f11a3bef9b809f5417bcb1f42f59e23163 |
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