MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, with at least two pointing to suspicious domains ('zajinet.ru' and 'uscreditreport.info') that are part of a link farm designed to redirect users. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a date, suggesting it was generated by a tool. The presence of external URIs and the link farm heuristic strongly suggest a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 5
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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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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://zajinet.ru/123?utm_term=kingdom+hearts+world+of+chaos+guide PDF link annotation
- http://uscreditreport.info/7447879341s5hoa.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4425908/normal_60092178e3476.pdfIn PDF document text
- http://mx50off.pro/33432639244zb91y.pdfIn PDF document text
- http://potoborotagivud.22web.org/xozuri.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4479923/normal_603e1a7660d0e.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4404984/normal_5fe0fd44de624.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4409103/normal_5fe98753716fc.pdfIn PDF document text
- http://it50disconto.pro/junji_ito_tomie_quotesu00xd.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4448551/normal_603de5d909ef5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4473938/normal_6013e678bdc35.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4408186/normal_5feb30cd8562b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367624/normal_603d285031abc.pdfIn PDF document text
- http://espacecmb.xyz/gaming_logo_maker_app_iosxfqs4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4420036/normal_602e396492b3c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4501660/normal_60171d9e0ce3c.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/0819720b-7f29-4853-a1d5-0afc6c36a7a9/whirlpool_top_loading_washing_machine_repair_manual.pdfIn PDF document text
- http://bilonukipi.rf.gd/what_dlc_does_fallout_4_goty_come_with.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/af006c78-bb7d-47ff-90d8-3a3c6b979fa5/81779560174.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c4367719-6009-47c3-b2a6-8be76ad2df75/what_type_of_lawyer_gets_paid_the_most_in_south_africa.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/20440283-ec85-47d4-a138-0ceaf29b88ea/vidas_secas_livro_online.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ec0e0d53-5f75-4771-8d78-713fcf40eaac/dasemudadidajibizim.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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000fef7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEF7 | 5496 bytes |
SHA-256: fe43759968db47ae841944bd8cb5402aabdb54a3371f1fb3dbd48b1abb0aae14 |
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font_01_sfnt_off00011195.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11195 | 10096 bytes |
SHA-256: 042184de7db5125a0979125cc35333ef419cba4c7735d00ff3facf97570830b1 |
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