MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malicious content delivery attempt. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is https://jacksth.ru/strik?utm_term=munkres+topology+solutions+chapter+3+section+23, which likely serves as a redirector or landing page for malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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 contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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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://jacksth.ru/strik?utm_term=munkres+topology+solutions+chapter+3+section+23 PDF link annotation
- https://cdn.sqhk.co/tedigedubemi/ijouMco/70295919680.pdfIn PDF document text
- http://xagixowedobosab.medianewsonline.com/xokubekudofijekogar.pdfIn PDF document text
- https://cdn.sqhk.co/rasetiwulipu/sghhev1/gingerbread_run_game.pdfIn PDF document text
- https://cdn.sqhk.co/fabunavaxa/jbiihgo/pujudevejupakebazolog.pdfIn PDF document text
- https://cdn.sqhk.co/dexediwiboze/gcummif/vifijaderebawatebapeninut.pdfIn PDF document text
- https://cdn.sqhk.co/xidizizo/vqhd7je/samsung_bixby_voice_app.pdfIn PDF document text
- https://cdn.sqhk.co/letarezetap/CDWhbqq/bamogapewinifusofenarilog.pdfIn PDF document text
- https://cdn.sqhk.co/fakobijo/giggJjc/sceptre_tv_remote_codes_directv.pdfIn PDF document text
- http://jiwabozaxexe.mypressonline.com/4940607279.pdfIn PDF document text
- https://cdn.sqhk.co/kegimovotol/oSfigTq/11101931681.pdfIn PDF document text
- https://cdn.sqhk.co/safovokon/QbTjb7i/91653804481.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/pozokimepe/asset_management_guidelines.pdfIn PDF document text
- https://626fb5af-1d67-41cb-86ce-204163677ff0.filesusr.com/ugd/9d869b_d8b0fc06712745629b84481b73cf5aa7.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/8cd42936-76fc-4274-a338-a9ad6fd8af36/99900281614.pdfIn PDF document text
- https://s3.amazonaws.com/sitozi/dusisegika.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/68d5d568-86f3-4c82-9cd6-d6286eed7406/zozuwarigunas.pdfIn PDF document text
- https://s3.amazonaws.com/mukutud/biotechnology_park_in_africa_report.pdfIn PDF document text
- https://ad0d0dbb-669b-46a9-85df-79487014a0f3.filesusr.com/ugd/00d95d_a4979fe70ade4050a729225f1237d138.pdf?index=trueIn PDF document text
- https://e61e9f85-32c5-4861-9fd4-b89109084c35.filesusr.com/ugd/2e4eb4_d84a47ad889b476e8c46fe3dbf88f874.pdf?index=trueIn PDF document text
- https://7b9449e5-51e9-4a7e-81f5-8587c42320f9.filesusr.com/ugd/571bad_abc98cfaac434be0b58fcbf028d1a5a9.pdf?index=trueIn 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_off0000ea1b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA1B | 5664 bytes |
SHA-256: dfd29f3abf1b8cdce95336037afd8cbdda36b4edb3aa20cd37b1992a0d32afa2 |
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font_01_sfnt_off0000fd7b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD7B | 10452 bytes |
SHA-256: 9bc774c9139e917734a6599ea74f49140d5da77c2700948d2fc34df6013d92d8 |
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