MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains multiple heuristic firings indicating malicious intent, including random URL links and being part of a link farm on disposable hosting. The ML classifier and ClamAV detection strongly suggest maliciousness. The embedded URLs likely serve as a lure to download second-stage payloads, aligning with a phishing or malware distribution attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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=android+set+default+password+manager PDF link annotation
- http://www.julietlandau.com/fckeditor/userfiles/file/86838017415.pdfIn PDF document text
- https://www.mds-horizons.com/upload/files/45451636361.pdfIn PDF document text
- https://phunhai.net/upload/files/66252103239.pdfIn PDF document text
- http://cz-synergy.cz/data/file/67554905058.pdfIn PDF document text
- http://ambulatorioveterinarioscapindandrea.it/userfiles/files/tuselubu.pdfIn PDF document text
- http://shukokai-voves.fr/userfiles/file/62671557067.pdfIn PDF document text
- https://finliz.lt/i/File/90000418032.pdfIn PDF document text
- https://indiansecuritisation.com/ckfinder/userfiles/files/jisukepalupudijogijozo.pdfIn PDF document text
- http://fine-trading-knotwork.de/uploads/media/jekowuk.pdfIn PDF document text
- https://yakin-surewin.com/media/file/76941089871.pdfIn PDF document text
- http://zaintik.org/files/galeria/files/97421200898.pdfIn PDF document text
- http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1614d76f029d06---85467678365.pdfIn PDF document text
- http://xn--h1aaebajlcgx.xn--p1ai/sadm_files/45437851418.pdfIn PDF document text
- http://bernardthevenet.fr/ckfinder/userfiles/files/ferojudobib.pdfIn PDF document text
- https://eravukappalpalli.com/userfiles/file/puvutolez.pdfIn PDF document text
- https://thenovgorodspaceship.andreirozen.com/images/files/negagomuris.pdfIn PDF document text
- https://bazab.ru/ckfinder/userfiles/files/sugosirozasune.pdfIn PDF document text
- https://vsetinrally.cz/userfiles/file/nupid.pdfIn PDF document text
- http://fields-on-earth.com/images/blog/file/97654935882.pdfIn PDF document text
- http://myappartement.de/web/editor/files/getasopipitedunitodikamas.pdfIn PDF document text
- http://zaintik.org/files/galeria/files/95402151174.pdfIn PDF document text
- http://mentaplywood.com/images_upload/files/fejujopalijibakepiwojeza.pdfIn PDF document text
- http://archetipoingegneria.it/userfiles/files/69077885068.pdfIn PDF document text
- https://reazfarah.com/ckfinder/userfiles/files/nagorivepubatow.pdfIn PDF document text
- https://alixdemassy.fr/userfiles/file/wenosux.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_off0000b2f4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB2F4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cb06.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB06 | 15724 bytes |
SHA-256: dc1db971020e124fc6989bc25a0f4268e9ed17a174b8b806ba6d5544f55ee34c |
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font_02_sfnt_off0000f297.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF297 | 11008 bytes |
SHA-256: d6efb070d50c2ac8431980054f2871531fab0b518be6ce1743bca36bd68be8e6 |
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