MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded JavaScript and multiple links to compromised websites, some of which host PDF files. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs users to decrypt a password-protected archive, a common tactic for evading gateway scanning. The ML classifier and ClamAV detection strongly suggest malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 8
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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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/f4a7d85e3692aad5113d98342e951696/79658291141.pdf In PDF document text
- https://www.treehousecare.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607d5cd086466---mazamagudarixu.pdfIn PDF document text
- https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608b2638b19f2---fusajavux.pdfIn PDF document text
- http://kppzp.pl/userfiles/file/kusomikikedoniwo.pdfIn PDF document text
- http://youngshiny.com/userfiles/file/1622146314.pdfIn PDF document text
- http://sincaremedicaltour.com/js/upload/puvadegunedotofoj.pdfIn PDF document text
- https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/f07e53ae0f5daa4fccacacfcd5f2ab57/73833531953.pdfIn PDF document text
- http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad5c8686855---gapegefuno.pdfIn PDF document text
- http://codienlanhminhquang.com/upload/files/41269856492.pdfIn PDF document text
- https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/661ab3badcbf9147bd963fe41fde468f/57656644231.pdfIn PDF document text
- http://unityproductions.com/upload/files/53406448188.pdfIn PDF document text
- https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9a257dad70---87709387228.pdfIn PDF document text
- https://festival.bg/fckeditorfiles/file/gebenuwekapawas.pdfIn PDF document text
- https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/3d9f6151f91ca6c60a80bd46ed24478c/livajerijeka.pdfIn PDF document text
- http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16098f8c4e5c76---mafaxixebamafibu.pdfIn PDF document text
- https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/f4mgtm5rvk65af5g2va8lsfh3a/24162167511.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/ngfLrbzwjls/uplcv?utm_term=how+to+edit+secured+pdf+without+passwordPDF 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_off000107ed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107ED | 5264 bytes |
SHA-256: e0af5a7aed59fd6798efed9043a07c18f12d3c59ce18ec22fea900a7d19fc96e |
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font_01_sfnt_off000119e3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x119E3 | 12252 bytes |
SHA-256: 8881ae51e038073e1fe77fbf91255d413a2590a6ca4015103c4b33b1c9e8f4e0 |
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