MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is identified as malicious by ML classifiers and ClamAV, with multiple heuristics indicating it functions as a link farm. The PDF contains numerous external URIs pointing to various domains, suggesting an attempt to redirect users to potentially malicious content. The presence of 'utm_term' parameters in some URLs indicates a phishing or SEO-based lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://oniceh.ru/uplcv?utm_term=finite+and+infinite+games+pdf PDF link annotation
- http://seoulgreeter.com/userData/board/file/xuviwudijifuxulu.pdfIn PDF document text
- https://at1apigroup3.com/contents/files/40182185710.pdfIn PDF document text
- http://zapatosperezcabrera.com/ckfinder/userfiles/files/78397007758.pdfIn PDF document text
- http://lifeline-sports.com/files/file/35274061995.pdfIn PDF document text
- http://digitalpolicycouncil.org/imagenes/file/77392825448.pdfIn PDF document text
- http://www.florentmaussion.net/userfiles/File/37518983610.pdfIn PDF document text
- http://carbontuning.ru/file/25747546984.pdfIn PDF document text
- http://dlugopis.kbo.pl/ckfinder/userfiles/files/jowisafewujadeki.pdfIn PDF document text
- https://bfull.ru/uploads/files/judavepude.pdfIn PDF document text
- http://biosurfest.com/userfiles/files/bivuzajeviwagepivunuw.pdfIn PDF document text
- http://skisun.it/userfiles/files/diligajumiga.pdfIn PDF document text
- http://elpijisystem.com/file/duzodi.pdfIn PDF document text
- https://home-consult.lu/userfiles/files/61411080225.pdfIn PDF document text
- http://newabel.com/ckfinder/userfiles/files/pikubojemudorabodu.pdfIn PDF document text
- http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613536ef020d6---fapebi.pdfIn PDF document text
- https://tttinox.com/upload/userfiles/files/846747325.pdfIn PDF document text
- http://z-sinpro.com/upload/files/2862292108.pdfIn PDF document text
- http://onyx-innovations.com/assets/ckfinder/userfiles/files/43397558471.pdfIn PDF document text
- https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ed8a4e9d22---95132927909.pdfIn PDF document text
- http://locthanhroyal.com/upload/files/33237388686.pdfIn PDF document text
- http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16142f02d0b4bf---ditosoxufewutuje.pdfIn PDF document text
- https://danielfelber.ch/userfiles/file/62148647967.pdfIn PDF document text
- http://texinpack.com/uploadfile/file///2021091621090655.pdfIn PDF document text
- http://sinsg.com/files/fckeditor/file/zerafuvi.pdfIn PDF document text
- https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613fcf5669538---4011800665.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_off0000dc9d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC9D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f4b4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4B4 | 10552 bytes |
SHA-256: 549f1b81f074e08804c7fb780a59742f4221e8a2e383edf5570566088b7e686c |
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font_02_sfnt_off00010c7d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C7D | 18488 bytes |
SHA-256: 8a737cf50517d5d0b5f7dac4c647081a7d2c8ba53498648e488449b6a6f088d3 |
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