MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many of which are hosted on disposable domains or compromised CMS upload storage, indicating a link farm designed to redirect users to malicious content. The presence of multiple PDF link farm heuristics further supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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 http://espressobuilders.com/app/webroot/files/userfiles/files/52766348831.pdf In PDF document text
- http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133e992571d8---80578035052.pdfIn PDF document text
- http://ekachaiguitarist.com/ckfinder/userfiles/files/70804350406.pdfIn PDF document text
- http://kezmosas.hu/files/file/napanabiwixirulededis.pdfIn PDF document text
- https://bd-sokolovska.eu/userfiles/file/rijowafin.pdfIn PDF document text
- http://xindeshiye.com/uploadfile/file///2021091311292293.pdfIn PDF document text
- http://spy-military-labs.com/userfiles/file/mupunawegamakanizonivip.pdfIn PDF document text
- http://humansharehouse.com/userData/board/file/85093271453.pdfIn PDF document text
- http://minisadik-margaritka.ru/admin/ckfinder/userfiles/files/21642623755.pdfIn PDF document text
- http://aceonlinementors.com/userfiles/file/bodute.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cf6037c6da---68831618797.pdfIn PDF document text
- http://freetourscadiz.com/ckfinder/userfiles/files/lawapus.pdfIn PDF document text
- http://grupopiscis.com/upload/files/25585797228.pdfIn PDF document text
- http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161328aa89abce---86680331615.pdfIn PDF document text
- https://brahmagnanam.org/fck_uploads/file/40961477567.pdfIn PDF document text
- https://ltssinternational.com/res/wysiwyg/file/bawusibovasazediwinuzak.pdfIn PDF document text
- http://mya1fc.com/files/ckuploads/files/buwajusa.pdfIn PDF document text
- http://kangmeideyiliao.com/uploadfile/file///2021090801225962.pdfIn PDF document text
- http://madveras.com/ckfinder/userfiles/files/vuxesatiwoxusalasi.pdfIn PDF document text
- https://intrigantka.ru/images/userfiles/file/72398292851.pdfIn PDF document text
- http://planbmedia.hu/files/sitideradozobesusix.pdfIn PDF document text
- http://langeline.com/ckeditor/upload/files/zarigej.pdfIn PDF document text
- https://harkakotony.hu/UserFiles/file/rufamelanoxi.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=winning+eleven+modPDF 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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d879.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD879 | 18240 bytes |
SHA-256: 5ae9a8a1a070d0ceb981cba3bbbe3984dc28ad45c93159f2ddb70b95bcaa23a6 |
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font_01_sfnt_off00010702.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10702 | 10124 bytes |
SHA-256: 84b48c3d189246fdfff904d63e289e3785a944c683060468c982aa23cc4cc3be |
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font_02_sfnt_off00011d4a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D4A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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