MALICIOUS
172
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and multiple external URIs, many of which point to compromised WordPress sites or disposable hosting, suggesting an attempt to deliver a secondary payload. The heuristic 'SE_INVOICE_LURE' indicates the document's content is designed to trick the user into downloading a file, likely a malicious invoice or payment request. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9913
Heuristics 8
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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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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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://terezmisszio.eu/files/file/raxes.pdf In PDF document text
- http://footstepfloor.com/upfiles/files/38542464608.pdfIn PDF document text
- http://www.tahi.hu/ckfinder/userfiles/files/43890081260.pdfIn PDF document text
- https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/f4f6adf29a7a49ffa31d68fd3dc9386f/53371548582.pdfIn PDF document text
- https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/160a685e8eabd1---zokizigolide.pdfIn PDF document text
- http://phukhoabacninh.com/images/files/14188086841.pdfIn PDF document text
- http://gsemilia.it/userfiles/files/sovalopexuxuvibofenak.pdfIn PDF document text
- https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/0829c7a675376f7f9bb5f7086fa76128/6527336982.pdfIn PDF document text
- http://vytvarnyobchod.cz/UserFiles/File/nibad.pdfIn PDF document text
- https://misionesmedellin2030.com/wp-content/plugins/super-forms/uploads/php/files/0nfkm1mglrt50eflg305k5l96g/81573906498.pdfIn PDF document text
- https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160adc93be5ece---dixepazevumufofodufofesi.pdfIn PDF document text
- http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161074273c4a66---zegedipevozov.pdfIn PDF document text
- http://kaies.cn/upfiles/210618163935887752h6chrp.pdfIn PDF document text
- https://menuiserie-sainte-anne.fr/userfiles/file/kibezowefajitupeworebaluj.pdfIn PDF document text
- http://www.leads-bd.org/app/webroot/js/ckfinder/userfiles/files/66043387638.pdfIn PDF document text
- http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c44f061002e---71557176189.pdfIn PDF document text
- http://americasbestwingsbeltsville.com/uploads/files/9960877216.pdfIn PDF document text
- http://www.ddu-hk.cz/ckfinder/userfiles/files/motetigefe.pdfIn PDF document text
- https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/13843a948e29d865afc1a51a365b78f3/jazezowelerisogefeve.pdfIn PDF document text
- http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/160adbd0843566---16953838290.pdfIn PDF document text
- https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/t264uu6u7nacc3os89370rb5o4/11726552298.pdfIn PDF document text
- http://noithatnhapkhaugiasi.com/luutru/files/wulijunaduk.pdfIn PDF document text
- https://discovercefalu.com/_data/images/file/kivaxutababoduzulabegigof.pdfIn PDF document text
- http://yasaitogo.com/uploads/files/puzosazokaz.pdfIn PDF document text
- https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/qll1kh6kej2lk1mmksopo52o5g/54829256313.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/4902981224.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=42+days+notice+to+end+tenancyPDF 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_off000100a1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100A1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off000118b8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x118B8 | 10432 bytes |
SHA-256: 719817d913a97624fa923dec9632358ae4d07f7df2fb54af362a7f6dd47356f5 |
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font_02_sfnt_off000130a4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x130A4 | 19092 bytes |
SHA-256: 69e1304b76019c611fb5c87a4a097251814553b1409e8b00165a30a6da4b91f5 |
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