MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, hosting numerous links on compromised WordPress sites and disposable domains, likely to distribute malware or facilitate phishing. The presence of a 'download button' lure further supports this malicious workflow.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/4e10dd939250e0e0e41f488968f60125/57898234931.pdf In PDF document text
- https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd0ba980ab---94210820073.pdfIn PDF document text
- https://archltginc.com/wp-content/plugins/super-forms/uploads/php/files/ac9bb051b79b496e2d267547d2feedab/bebesuvokomamububutik.pdfIn PDF document text
- https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/160c888d10ec74---teleboxafolawu.pdfIn PDF document text
- http://jubileejec.com/userfiles/files/zafisewejobozan.pdfIn PDF document text
- https://alkalacarservice.com/public_html/userfiles/file/diwipafafutogoboje.pdfIn PDF document text
- https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/e117111f9a80e33c6a96d85f1f93b786/bozewene.pdfIn PDF document text
- http://blackhorsesc.pl/userfiles/file/54859709777.pdfIn PDF document text
- http://beergolfers.com./blog/images/file/12307481423.pdfIn PDF document text
- http://bhsclassof70.com/clients/a/ac/acf0241a72c9eb28a719a759cf8a4748/File/29968081503.pdfIn PDF document text
- http://reszke.pl/fckeditor/editor/filemanager/connectors/php/file/biterezok.pdfIn PDF document text
- https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608c00aae7003---53615738084.pdfIn PDF document text
- https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083f202f01d7---diwelipusivegida.pdfIn PDF document text
- https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/fa6279ec993199cfde2286467417eefc/kitalav.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/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=turbo+vpn+mod+apk+premiumPDF 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_off0000dcf1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCF1 | 5108 bytes |
SHA-256: 97f7c584ab786331bd4da5eac5e22f8375e20af6595595b93920483d1b60dcc1 |
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font_01_sfnt_off0000ee3a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE3A | 11572 bytes |
SHA-256: 2fdd1f819d59152d3d8badbf57c62fbb3e968f362385506fdce62ab788075920 |
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