MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which are hosted on compromised CMS uploads, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, appears to reference a boiler manual, which is likely a pretext to trick users into clicking the malicious links.
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://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/2efc4d77b3e87bcc1d4c866a8bc8a36d/kekaxejojitole.pdf In PDF document text
- https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/fpv63q2klhf1pg5bjd0bahkkc0/pojerar.pdfIn PDF document text
- http://stjconsulting.it/userfiles/files/javasedir.pdfIn PDF document text
- https://contact-house.com/fckeditor/upload/file/dojuj.pdfIn PDF document text
- http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160bbb829101c2---foxejawodidar.pdfIn PDF document text
- https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/9tjli3mkh86kvd09e1eln6vkio/6178600924.pdfIn PDF document text
- http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16093bb812a203---17162473032.pdfIn PDF document text
- http://zaun-produzent.de/userfiles/file/40949335924.pdfIn PDF document text
- http://tpdw.pl/userfiles/file/xosufakowivetonu.pdfIn PDF document text
- http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/160926ad239466---15167573177.pdfIn PDF document text
- http://ruilong-ironwork.com/CKEdit/upload/files/nufudovel.pdfIn PDF document text
- https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b570e162ef0---tekuwixi.pdfIn PDF document text
- http://sobinco.cz/ckfinder/userfiles/files/34437478628.pdfIn PDF document text
- http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c81722cdc1---womuxufujozalir.pdfIn PDF document text
- https://pypconsultores.mx/userfiles/file/xexeve.pdfIn PDF document text
- https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/b2dece37bd4a514ed2e699cca619d263/rosakegigimo.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=peerless+purefire+boiler+manualPDF 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://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_off0000e33e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE33E | 5188 bytes |
SHA-256: f42c2ba1175ff6eddb3ce325c911f4a8bee5ef59498082fbcc311ee7d176f8bb |
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font_01_sfnt_off0000f4c6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4C6 | 10416 bytes |
SHA-256: d6ec2deb2535ffb2064b34d86e767fb06cb9111975f5d6d4181e8090826ccd86 |
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