MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. Numerous embedded URLs were found, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 6
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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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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://crewmak.ru/uplcv?utm_term=subway+surfers+hack+with+unlimited+coins+and+keys PDF link annotation
- http://precisao.net/files/files/rewujemuguvu.pdfIn PDF document text
- http://tavaszitura.eu/userfiles/files/jumomivupupafenejodo.pdfIn PDF document text
- https://usssecuritate.ro/userfiles/file/72612999805.pdfIn PDF document text
- https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16146a265ba3a4---98231154148.pdfIn PDF document text
- http://nessium.fr/userfiles/file/32906628556.pdfIn PDF document text
- http://dorinhawear.com/admin/fckeditor/editor/filemanager/connectors/php/fckeditor/editor/filemanager/connectors/php/userfiles/file/kenuwiso.pdfIn PDF document text
- http://seattlebestteriyaki.com/uploads/files/47383009268.pdfIn PDF document text
- http://bienbao.net/uploads/files/toxojefenopafuseje.pdfIn PDF document text
- https://ourcampuswindow.com/ckfinder/userfiles/files/riwoko.pdfIn PDF document text
- http://debten.net/UserFiles/File/44039751614.pdfIn PDF document text
- http://www.perchegouet.com/ckfinder/userfiles/files/15023698636.pdfIn PDF document text
- https://eirai.org/editor/ckfinder/userfiles/files/dujujebukanixodewelinipaz.pdfIn PDF document text
- http://surveycook.com/upload/tmp/202109/file/14430755866.pdfIn PDF document text
- https://tennis94.fr/img/pics/files/xokene.pdfIn PDF document text
- http://tecsun-moscow.ru/docs/file/77506375234.pdfIn PDF document text
- https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/1bbbd9d94127c4e76e3619f026b0ec19/77492591613.pdfIn PDF document text
- http://transbur.ru/admin/ckfinder/userfiles/files/16224372588.pdfIn PDF document text
- http://sakurahoaanhdao.com/webroot/img/files/ribipiretalaboneju.pdfIn PDF document text
- https://gizaviation.com/uploads/files/ziripurewubogararojekomar.pdfIn PDF document text
- http://robbes.nl/media/files/63100103348.pdfIn PDF document text
- http://studiocalcinoni.com/userfiles/files/buwoleka.pdfIn PDF document text
- https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/fbgfr87kic73i2o3sd5okm1sk2/jidew.pdfIn PDF document text
- http://avon-bratislava.com/files/files/11981310039.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_off0000c5a9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC5A9 | 11348 bytes |
SHA-256: db4effacc89f21143ff713629b0c8745f363fdc4e5add96038e6ac36f54a6e24 |
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font_01_sfnt_off0000e03f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE03F | 17048 bytes |
SHA-256: 2ced436d25d73f13f558bef35d69e01c12dcfd4b2f3356e61be21cee172a0928 |
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font_02_sfnt_off00010c0e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C0E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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