MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was identified as malicious by ClamAV and an ML classifier, with heuristics indicating it functions as a link farm. Several URLs point to other PDF files hosted on potentially compromised or disposable domains, suggesting a distribution mechanism for phishing or malware. The document body was unreadable, but the presence of numerous links and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly suggest an intent to lure users to external sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9833
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 http://www.enjoyvaltellina.it/admin/ckfinder/userfiles/files/8847451684.pdf In PDF document text
- http://brenderup.ro/mm/file/wegas.pdfIn PDF document text
- https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613b31a5af276---9342175787.pdfIn PDF document text
- https://sofupingame.com/calisma2/files/uploads/rowakekorur.pdfIn PDF document text
- https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/a8690628e27b3c01b7c2007b71ecbc0d/54903816547.pdfIn PDF document text
- http://synergyproperty.com/images/files/kedabumitujuritutixadur.pdfIn PDF document text
- http://carneslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/matewavuge.pdfIn PDF document text
- https://bunianco.com/other_files/File/26302449858.pdfIn PDF document text
- http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613cc1115795b---saxipuvofomi.pdfIn PDF document text
- https://gcr.goldcrownresort.com/magazine_files/files/7730188567.pdfIn PDF document text
- http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/ampcnmkc3g82fjsaeu68q02vf1/kawik.pdfIn PDF document text
- http://maychaybocaocap.com/app/webroot/uploads/files/26018930306.pdfIn PDF document text
- https://pellevah.com/upload/files/pitofexelulezifo.pdfIn PDF document text
- https://vildmarksjagt.dk/userfiles/file/medesu.pdfIn PDF document text
- http://hongdanhaudio.com/luutru/files/mebilawobo.pdfIn PDF document text
- http://trieuduong.com/images/Download/pebumofevujubojizisufiwo.pdfIn PDF document text
- http://quaisetoiles.fr/img_pages/file/16246449143.pdfIn PDF document text
- http://strategie-online.net/catalogue_dynamique/file/20167813309.pdfIn PDF document text
- http://vikohasanfiber.com/upload/files/81448380415.pdfIn PDF document text
- http://myepres.com/HotelEstimator/userfiles/file/fubobaku.pdfIn PDF document text
- http://stefanourso.com/public/userfiles/file/xerafedukafamebaf.pdfIn PDF document text
- http://belgium-ex.com/images/blog/file/97854826257.pdfIn PDF document text
- https://butagallery.com/userfiles/files/32058408501.pdfIn PDF document text
- http://turinhotelcompany.com/userfiles/files/luzosedin.pdfIn PDF document text
- http://marmaraisg.com/images_upload/files/11471420402.pdfIn PDF document text
- http://candemdientu.com/Images_upload/files/23095570398.pdfIn PDF document text
- http://easyliveconstruction.com/ci/userfiles/files/nezebotubuguxeber.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=what+number+is+not+prime+or+compositePDF 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_off0000d43a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD43A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ec4c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC4C | 18696 bytes |
SHA-256: a247557ff51456cc70c17617440de4e4c7334308f45166b96050de4c50f57c49 |
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font_02_sfnt_off00011cbb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11CBB | 10824 bytes |
SHA-256: 04f098069a9cc5a9ce056d7523a5297d000b2aa3f464c2643cb68e281ff422c5 |
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