MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and unreadable, providing no direct clues to its intent beyond the heuristic findings.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://philabc.ru/uplcv?utm_term=escoliose+idiopatica+juvenil+pdf PDF link annotation
- https://jpjplumbingandheating.com/FCKeditor/file/96078671634.pdfIn PDF document text
- http://thementalhealthadvocates.org/files/userfiles/file/bowupifeg.pdfIn PDF document text
- https://kisikana.hr/userfiles/file/bewadozojix.pdfIn PDF document text
- https://hanomanberjaya.com/contents//files/mudikakavisa.pdfIn PDF document text
- https://discovercefalu.it/_data/images/file/jonopidojujefab.pdfIn PDF document text
- http://xnkvinatimex.com/uploads/files/33569301817.pdfIn PDF document text
- http://bakersfield.thepokeluau.com/uploads/files/saxosamot.pdfIn PDF document text
- http://ashole.hu/UserFiles/File/totizedebevadavakoneganu.pdfIn PDF document text
- http://sourceit.ke/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/84962530898.pdfIn PDF document text
- http://digemnd.com/UserFiles/file/lukarogef.pdfIn PDF document text
- https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/kqu0q3m62bftngqbolp6hfqqr2/42900384302.pdfIn PDF document text
- https://ajur.rest/uploads/userfiles/file/52442601434.pdfIn PDF document text
- http://tycoonmedical.com/userfiles/file/87206611990.pdfIn PDF document text
- http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/16073702e0d21e---mulajeri.pdfIn PDF document text
- http://n-production.com/upload/fckeditor/file/bemezozemofopesivisav.pdfIn PDF document text
- http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/1239a828207a3c3e92383aa04f6321aa/90457491823.pdfIn PDF document text
- https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/9tbq5u5v65un2o7gcn2tbk62e6/62131010220.pdfIn PDF document text
- https://85097781.com/upload/files/87104220608.pdfIn PDF document text
- http://reopen911.info/media/file/10341734562.pdfIn PDF document text
- http://newgatedesign.com/Images_upload/files/jarodijek.pdfIn PDF document text
- https://brtim.com/uploads/wysiwyg/files/papekataxafiwegitipa.pdfIn PDF document text
- https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/8uj2nbtoo4m16rguolkd5f4qgm/jubazulapefupitalovofus.pdfIn PDF document text
- https://solelane.com/ckfinder/userfiles/files/85387870956.pdfIn 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://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_off0000eeb0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEB0 | 18960 bytes |
SHA-256: 6a938402cd8401b3cd8a9742018a07b95902554bc5dd9fd6c6bf6abaa542822b |
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font_01_sfnt_off00011ffe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11FFE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00013815.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13815 | 10792 bytes |
SHA-256: b88f88e4ee024665d44a43cf214e9421335fe0d1de95a048e639f41693ab2547 |
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