MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious intent. The presence of numerous external URIs, including a link farm on disposable hosting, suggests a phishing or malware distribution scheme. The 'SE_CALLBACK_LURE' heuristic indicates the document may attempt to trick users into calling a fraudulent support number.
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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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://cructi.ru/uplcv?utm_term=printing+documents+to+pdf PDF link annotation
- https://cylinder96.ru/admin/ckfinder/userfiles/files/tavasugiporazopore.pdfIn PDF document text
- http://www.ecvbrass.ch/user/web/file/besowewora.pdfIn PDF document text
- http://sedaciesupravy.sk/media/file/gosagudigabupofabusawuxuw.pdfIn PDF document text
- https://alrukn.co/userfiles/files/dogupu.pdfIn PDF document text
- http://spartaksedlec.cz/spartaksedlec/userfiles/file/67776167190.pdfIn PDF document text
- http://phone-server.com/userfiles/file/32094481103.pdfIn PDF document text
- http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/16131dbc57be78---guxunimejazaliliwibimawov.pdfIn PDF document text
- https://clubselect.ro/ckfinder/userfiles/files/kanipaxagixebak.pdfIn PDF document text
- http://bamila.vn/luutru/files/14882542929.pdfIn PDF document text
- https://bfull.ru/uploads/files/66525131191.pdfIn PDF document text
- http://linklandhotels.com/upfile/editor/files/86693430002.pdfIn PDF document text
- https://coherence.cz/userfiles/file/dovosijiji.pdfIn PDF document text
- https://kvzriu.org/images/file/mofarixuwarima.pdfIn PDF document text
- http://awkontrakt.pl/ckfinder/userfiles/files/99176353051.pdfIn PDF document text
- http://ylphs.com/ckfinder/userfiles/files/91885270311.pdfIn PDF document text
- https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613f59bfb9062---totifomasujupoj.pdfIn PDF document text
- https://anyimaker.com/upload/users/files/19075302362.pdfIn PDF document text
- http://premo.at/userfiles/file/mimamelopinataruparipanuz.pdfIn PDF document text
- http://wsp.pl/userfiles/file/83933054937.pdfIn PDF document text
- http://inphilong.com/upload/files/dovujetalunegimov.pdfIn PDF document text
- http://sns-russia.ru/userfiles/file/98249196755.pdfIn PDF document text
- http://hosteleriayvending.com/ckfinder/userfiles/files/dotajukevoza.pdfIn PDF document text
- http://gsemilia.it/userfiles/files/52668481684.pdfIn PDF document text
- http://paillasse.hu/userfiles/file/11928244788.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_off0000b2ef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB2EF | 16404 bytes |
SHA-256: f0358f813471ea8ab9f89530904c81554a53b0ec23c47a14d4cefb717f8aed6d |
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font_01_sfnt_off0000dd01.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD01 | 10856 bytes |
SHA-256: 610f5a527fa80483ce7a96a2012ee5eb95a71f9c5a91095167f44fa8c36e0737 |
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font_02_sfnt_off0000f5db.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5DB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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