MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is identified as malicious by ML classifiers and ClamAV, with heuristics indicating it functions as a link farm. Multiple external URIs are present, some pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The PDF structure and embedded URLs are consistent with attempts to lure users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9911
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://coretry.ru/uplcv?utm_term=plus+followers+4+red+download+app
- https://beautydent.hu/editor_up/jonuzetunajev.pdf
- http://www.temaricerca.com/entry2013new/admindia/ckfinder/userfiles/files/32445737730.pdf
- https://losungversorger.com/product/file/sowugotabi.pdf
- https://silverstonedevelopments.com/ckfinder/userfiles/files/44005838395.pdf
- http://ghinelliarchitettura.it/userfiles/files/11931434099.pdf
- https://stancijanegrin.com/UserFiles/files/29055983298.pdf
- http://lblussana.it/images/file/pegosazuwazogebex.pdf
- https://dmshospital.com/mm_engg/files/japolideboki.pdf
- http://naasschoolofmotoring.com/fckeditor/userfiles/file/fozogoderoxan.pdf
- https://onwater.my/uploads/file/jatagaxosago.pdf
- https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/1rloa1e7d1kmv23c12t6jpiv9l/39300357938.pdf
- http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613a0248c3e72---pupejulaj.pdf
- http://akcjonariusz.com/UserFiles/file/79904077333.pdf
- https://linker.tw/files/61516065415.pdf
- http://romento.com/uploaded_files/userfiles/files/80664366140.pdf
- http://koovappadyscb.com/ckfinder/userfiles/files/tuwijidov.pdf
- https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16130e0fa0ad28---25275342693.pdf
- http://www.parkwaytransplant.com/media_upload/upload/files/44358389589.pdf
- http://bidmitt.com/img/files/file/kolujefeneriferox.pdf
- https://pacie.vn/web/uploads/files/jozakif.pdf
- http://www.kymenhome-etsinta.net/tiedostot/files/sunod.pdf
- https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/6fe80a8f98e326737f51939bdf9a3c13/bolisegawaju.pdf
- http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1613d3e5de2bef---nodewejos.pdf
- http://087334211.kad.tw/kads/ckfinder/userfiles/files/mizawe.pdf
- https://m-isc.com/userfiles/file/29358407927.pdf
- https://postelezmasivu-olomouc.cz/ckfinder/userfiles/files/10618139826.pdf
- https://equipelec.fr/ckfinder/userfiles/files/70329452331.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000dcac.bin145c64507031c56c8e09465067ba0e23bf5fce0f8cf94b4a5a8f686c9f1a540b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCAC | 18824 bytes |
font_01_sfnt_off00010d6b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D6B | 16792 bytes |
font_02_sfnt_off00012582.bin1b1820570029aa8e3c3ab56b6982f18410a7ad407848c603f65a9b91df65a252 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12582 | 10568 bytes |
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