MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample is a PDF file flagged by ML classifiers and ClamAV as malicious. It contains heuristics indicating it's part of a link farm on compromised CMS uploads, likely an SEO poisoning tactic to lure victims. The presence of a 'download button' heuristic further supports a phishing or social engineering attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
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://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16082db5e0e44b---10819356239.pdf In PDF document text
- http://akkoryazilim.com/userfiles/file/83879321402.pdfIn PDF document text
- https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/160881a1ad7bd0---65920171820.pdfIn PDF document text
- https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/51f0e922d244df2af48e7841a0ee191e/fuwosaxevisudagod.pdfIn PDF document text
- https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609074f374f1e---xugekuxo.pdfIn PDF document text
- http://ankamet.com/userfiles/file/fugunowi.pdfIn PDF document text
- http://stalmost.pl/userfiles/file/pisasarakasisewof.pdfIn PDF document text
- https://mytopics.it/uploads/file/mebon.pdfIn PDF document text
- https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/13f854a383a11f82079481a975d337c0/72880147734.pdfIn PDF document text
- http://adaviestransportltd.com/userfiles/file/fukakimumowexozofona.pdfIn PDF document text
- http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16087b70d25664---velove.pdfIn PDF document text
- https://chmelo.hu/sites/default/files/file/daboxinuralisatusizevoson.pdfIn PDF document text
- https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/34ed56a7cffe5f9a06c2252cd9270d01/39422334993.pdfIn PDF document text
- https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2f9b553507---fafijasuzulopogadosose.pdfIn PDF document text
- http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160797616ce413---gabokugadofidu.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/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=blyss+dehumidifier+instructions+1012ecPDF 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_off0000ded7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDED7 | 5528 bytes |
SHA-256: 471881ce7518f0fbc97f2a962dd35cabe06f03c0499e4dd70d32e567a53169ed |
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font_01_sfnt_off0000f18e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF18E | 12120 bytes |
SHA-256: b89ef407acaefda1f101e2fd903ef7a749dcf05e9b01c5311a49ef6aa88995c5 |
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