MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and numerous external URIs, many of which are part of a link farm hosted on compromised CMS uploads or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The embedded JavaScript is a common technique for executing malicious code within PDFs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
Heuristics 7
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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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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://coretry.ru/uplcv?utm_term=wii+gun+shooting+games PDF link annotation
- https://eastmanllc.com/ckfinder/userfiles/files/70617835403.pdfIn PDF document text
- http://volker-issmer.de/userfiles/file/vanavaxusir.pdfIn PDF document text
- https://healthmatters.me/userfiles/file/nigopavamalopusivivax.pdfIn PDF document text
- https://linardi.ru/files/file/59598221375.pdfIn PDF document text
- http://sirindhorn.net/upload/File/4987852982.pdfIn PDF document text
- https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/c535df29d6ffeb81139088ffd6b52613/buxexerofiwegud.pdfIn PDF document text
- http://centromedicoveterinarioadda.com/userfiles/files/95962548135.pdfIn PDF document text
- http://nriloan.jctoursandtravels.in/files/17452050144.pdfIn PDF document text
- https://www.meditech.cz/ckfinder/userfiles/files/59677443301.pdfIn PDF document text
- https://khotelmarket.com/FileData/ckfinder/files/20210916_CAD3B9C787CFA39C.pdfIn PDF document text
- https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/16146c8bc29eac---saguti.pdfIn PDF document text
- http://www.southforconstruction.com/frontend/web/ckfinder/userfiles/files/nikobupalomuragoko.pdfIn PDF document text
- http://colokit.thienlonggroup.com/Images_upload/files/rirujudokupibimavopofip.pdfIn PDF document text
- https://cissud.eu/uploads/ck_editor/files/69585103401.pdfIn PDF document text
- http://thecargonepal.com/userfiles/file/59315663563.pdfIn PDF document text
- https://ourlady-schools2.com/userfiles/files/20744598033.pdfIn PDF document text
- http://gsmontaggi.it/userfiles/files/91842126427.pdfIn PDF document text
- http://ameshamagazine.com/js/upload/files/40677733789.pdfIn PDF document text
- http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16133e9e891363---wuwixoromuroxar.pdfIn PDF document text
- http://generaltubi.com/container/ckfiles/files/87146222075.pdfIn PDF document text
- http://elektrostroy.kz/ckfinder/userfiles/files/xetexusilagu.pdfIn PDF document text
- https://electrodomesticaruano.com/images/ckfinder/files/49214269669.pdfIn PDF document text
- http://studioingtassinari.eu/userfiles/files/sotupavedumel.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_off0000b256.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB256 | 10504 bytes |
SHA-256: 3cba2b0bda69fa5a05adcd90b7acd84e5cea66be5604cfc78dc319343e969d00 |
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font_01_sfnt_off0000ca14.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA14 | 14376 bytes |
SHA-256: c4c95a6c104e0ba968f07974a25ae1f9e6d7c54a4edae4c81546d734e9257bb6 |
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font_02_sfnt_off0000ee11.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE11 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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