MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was identified as malicious by ClamAV and an ML classifier, with heuristics indicating it functions as a link farm and a callback phishing lure. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to malicious content or solicit phone calls under a pretext. The presence of numerous unknown URLs indicates a broad distribution effort.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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 http://szerecsengyogyszertar.hu/editor_up/80067239424.pdf In PDF document text
- http://ahnil.com/userData/board/file/bafabuwepilalufufula.pdfIn PDF document text
- http://www.museopizarra.com/ckfinder/userfiles/files/balulugefuxano.pdfIn PDF document text
- http://surestegc.org/documentos/file/59453887924.pdfIn PDF document text
- http://www.77ice.com/upload/files/duruto.pdfIn PDF document text
- https://jjcfurnituremaker.com/userfiles/files/bapekubovowujewobidu.pdfIn PDF document text
- https://www.hs-hofgastein.salzburg.at/ckfinder/userfiles/files/31532964558.pdfIn PDF document text
- http://ajk-opakowania.eu/upload/fck/file/59040291031.pdfIn PDF document text
- http://bagodilovaspark.hu/userfiles/file/nekusukunuvarotapotubuvu.pdfIn PDF document text
- https://movimientofamiliadejesus.com/images/uploaded/file/70142996652.pdfIn PDF document text
- http://bagiez.de/userfiles/file/52281625261.pdfIn PDF document text
- http://otohondamientay.com/upload/files/15517458092.pdfIn PDF document text
- http://electric-kernbichler.at/zodadetil.pdfIn PDF document text
- https://myclubowners.com/userfiles/files/25430229403.pdfIn PDF document text
- https://mudraconsultancy.com/uploads/files/gewovenedivitilasopi.pdfIn PDF document text
- http://vektorma.ru/uploads/assets/file/juletesopemigerot.pdfIn PDF document text
- https://parlagame.net/calisma2/files/uploads/46334535551.pdfIn PDF document text
- https://sacc-la-chaux-de-fonds.ch/fichiers/file/fuvizaroval.pdfIn PDF document text
- http://xn--80aer5aza.xn---42-5cdakyymnnb9ake1az.xn--p1ai/ckfinder/userfiles/files/nisodiwiwedoxerava.pdfIn PDF document text
- http://telesson.net/_UploadFile/Images/file/62320791408.pdfIn PDF document text
- http://putzlappenborner.at/editor_up/42722145841.pdfIn PDF document text
- http://longthinhphat.net/uploads/files/lugezezalibenidumenabaj.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=introduction+to+machine+learning+3rd+edition+pdfPDF link annotation
- 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_off0000b00b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB00B | 14552 bytes |
SHA-256: 6a88a424e837a22dd539d888d190669f802ef3b92a4c70b87238d2b396d8e81e |
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font_01_sfnt_off0000d4b8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4B8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000eccf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xECCF | 11124 bytes |
SHA-256: 0cc39d42f7fdd4ae0547ed766fd07c8d03b6bb313157b6350e398df9c55b1d62 |
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