MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites used for hosting files. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' indicate a pattern of using disposable or compromised hosting for link farms. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery via these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9937
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://archism.ru/uplcv?utm_term=stephen+jay+gould+the+mismeasure+of+man+pdf PDF link annotation
- http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/161320ad5c79d7---tavodikololoxiwewen.pdfIn PDF document text
- http://vdadanang.vn/app/webroot/assets/files/23288775518.pdfIn PDF document text
- https://kiptep.ru/file/84588133923.pdfIn PDF document text
- http://penzion-u-zamku.cz/files/file/99395973192.pdfIn PDF document text
- http://touristclub.in/userfiles/file/95246598967.pdfIn PDF document text
- http://mixmarketing.vn/upload/fck/file/vufedafe.pdfIn PDF document text
- http://sunpix.ru/img/lib/file/80714049463.pdfIn PDF document text
- http://irvine.songhakbbq.com/uploads/files/tavutubaxagesa.pdfIn PDF document text
- http://ck-kutnahora.cz/gais/image/file/bufomikuzubaduzuzopoguv.pdfIn PDF document text
- http://phukientubepxinh.info/gomsu/sanpham/anh/files/78383175350.pdfIn PDF document text
- http://cjmfgx.morefriendship.com/upload/files/1418114193.pdfIn PDF document text
- http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613bee83db74a---65607871020.pdfIn PDF document text
- https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/1048dd1bead6c05d0538786aacdf6460/filotubigamuf.pdfIn PDF document text
- http://eska-lift.ru/userfiles/file/pibegan.pdfIn PDF document text
- http://tfforming.ru/d/files/rinodopajunurame.pdfIn PDF document text
- http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/1612eb60bf2e53---menanonujuzen.pdfIn PDF document text
- https://sadex.pl/fck/file/sobuladawov.pdfIn PDF document text
- http://liqaa-lb.com/files/userfiles/files/22574218402.pdfIn PDF document text
- https://valgott.com/images/userfiles/file/77910362000.pdfIn PDF document text
- https://totalsewa.com/userfiles/file/40372210328.pdfIn PDF document text
- http://botosani.ro/img/uploads/file/fovulatal.pdfIn PDF document text
- https://highrise.pl/file/91333976295.pdfIn PDF document text
- http://teakdeck.pl/files/file/48297287145.pdfIn PDF document text
- http://aarogyamedico.com/userfiles/file/xisipebigerivatanavad.pdfIn PDF document text
- http://corising.info/sa_upload/userfiles/file/20210907081503.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_off0000f4e0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4E0 | 18848 bytes |
SHA-256: ee431c679c12065a60c2314199d3ffa033ff6e01d27131ffe7b044490b9d1860 |
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font_01_sfnt_off00012630.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12630 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00013e47.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13E47 | 11364 bytes |
SHA-256: e17084e6814f0981ff753c30cae246e7de3b11b1e55505d73bc42a6c6e8de9ed |
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