MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.
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://pistant.ru/uplcv?utm_term=free+lower+thirds+for+obs PDF link annotation
- https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ca585c957c---pijojanapekigoridewolipor.pdfIn PDF document text
- https://psiakocky-potisk.cz/webpagebuilder/ckfinder/userfiles/files/54088760087.pdfIn PDF document text
- https://vansuloi.com/uploads/userfiles/file/pudisisomijadevafimusatur.pdfIn PDF document text
- http://travelshops.pl/userfiles/file/60852900645.pdfIn PDF document text
- https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/3a987c3e68f89c521f4502fe7fec6cb7/jufanowipaveziru.pdfIn PDF document text
- https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/0f0929d0e94d009205c6e920a3c23c11/pifefesufuranavolonu.pdfIn PDF document text
- https://pypconsultores.mx/userfiles/file/97750686162.pdfIn PDF document text
- https://a2designbg.com/userfiles/file/50409225381.pdfIn PDF document text
- http://austria-ex.com/images/blog//file/tofiluzuxogokawide.pdfIn PDF document text
- http://arunimaflavours.com/userfiles/file/fuxebitexugimujipikif.pdfIn PDF document text
- https://andrejc.si/files/file/34889882245.pdfIn PDF document text
- http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608894aa6d7ff---zemiromudirokife.pdfIn PDF document text
- http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/1gpgfvgf6pfb1a6a6v1r8nktsn/74458955329.pdfIn PDF document text
- https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/fqpveitgpej5kbj28o4ls652hn/40441210916.pdfIn PDF document text
- http://dobrasekacka.cz/userfiles/file/29831778470.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f5e6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5E6 | 4972 bytes |
SHA-256: 00838deb0ae325ddcf1fe27b70a89d2682ab0c78a230279f3638e69cfb403060 |
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font_01_sfnt_off000106d7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x106D7 | 3008 bytes |
SHA-256: f090fb85693a2dd703f5e274df2360ea1102af5a35008786faa9123983463129 |
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font_02_sfnt_off000113a8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x113A8 | 10772 bytes |
SHA-256: 6ab4d0d99bc5b5b38d7a5de4ec5d55412f04c214f21b2a22cbe3eadb35754133 |
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