MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The sample is a PDF document flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. The 'SE_CALLBACK_LURE' heuristic indicates the document is designed to trick users into calling a phone number, consistent with phishing or tech-support scams. Although no scripts were explicitly extracted, the presence of numerous external URIs and the PDF structure suggest it may host or link to malicious content, potentially leveraging JavaScript for execution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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://krisoc.ru/uplcv?utm_term=gill+sans+bold+font+free PDF link annotation
- https://godparents4tz.org/home/god/public_html/ckfinder/userfiles/files/dajop.pdfIn PDF document text
- http://domexpo.ru/up/file/bopam.pdfIn PDF document text
- http://shippingengineering.com/files/ckeditorothers/49192289359.pdfIn PDF document text
- https://lompatjauh.com/contents/files/97576965041.pdfIn PDF document text
- http://palakkadtourism.in/ckfinder/userfiles/files/bejepabejum.pdfIn PDF document text
- http://www.ntweac.edu.hk/admin/ckfinder/userfiles/files/binirixupodaxebinixagofi.pdfIn PDF document text
- http://myshiou.com/uploads/files/202109032002337090.pdfIn PDF document text
- http://bretagne.annuaire-regional.com/ckfinder/userfiles/files/68908802606.pdfIn PDF document text
- http://ginzaramen.us/uploads/files/29606756020.pdfIn PDF document text
- https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/5668aa711425fb3fc14d7582c01c7a07/5930536416.pdfIn PDF document text
- http://mutitar.com/user_img/files/lewajuzodawekepilu.pdfIn PDF document text
- https://delcinfo.ru/img/files/files/filogel.pdfIn PDF document text
- https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1612ee9ee9faf2---63137600473.pdfIn PDF document text
- http://meimagedance.tw/ufiles/files/lonudipi.pdfIn PDF document text
- https://pioneerlift.com/upfiles/editor/files/87594473014.pdfIn PDF document text
- http://benthanhsgfarm.net/images/uploads/files/31097743427.pdfIn PDF document text
- http://studiofantino.it/userfiles/files/bemenifed.pdfIn PDF document text
- http://linpus.com/app/webroot/userfiles/files/nanukino.pdfIn PDF document text
- http://www.gamylai.vn/uploads/files/80292901741.pdfIn PDF document text
- http://kmsenior.org/file/files/temavanal.pdfIn PDF document text
- http://tiendanatacion.com/noticias/files/64147761330.pdfIn PDF document text
- http://rtm-plus.ru/ckfinder/userfiles/files/37342341096.pdfIn PDF document text
- http://attep.com/home/sandbox/domains/heekee.com.hk/public_html/ckfinder/userfiles/files/bukufonimobafufujaf.pdfIn PDF document text
- http://www.logomarcanet.com/userfiles/file/93018941914.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_off00010f3f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F3F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00012756.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12756 | 10524 bytes |
SHA-256: 0fd9e33e0a60f758d8b9b80cd9c1165810bbe2c722f4150c39d22a1c45036ba2 |
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font_02_sfnt_off00013f6c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13F6C | 20876 bytes |
SHA-256: 318c02eeb21c1445fc749a9e3844da7c18a0e8ab582a43dc1c10623fb2efcd92 |
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