MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links to external websites, with one critical heuristic identifying a link to a known malicious redirector at 'https://dafemum.ru/strik'. The document body, though heavily obfuscated, appears to be a lure related to 'Heraclitus contributions to philosophy'. The presence of multiple disposable hosting links and a high ML classifier score further indicate malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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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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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://dafemum.ru/strik?utm_term=heraclitus+contributions+to+philosophy In PDF document text
- http://nutunajika.66ghz.com/70875883061.pdfIn PDF document text
- http://puvepum.getenjoyment.net/58779085537.pdfIn PDF document text
- http://idealica-ordina.site/ravetexakawapojmaz6u.pdfIn PDF document text
- http://dipitada.iblogger.org/73900090164.pdfIn PDF document text
- http://filfex.ru/don_juan_restaurante_cartagenarebed.pdfIn PDF document text
- http://silvanozito.online/atul_prakashan_ready_reckonerokknj.pdfIn PDF document text
- http://xolokeminapi.getenjoyment.net/kejejodoxujebupozi.pdfIn PDF document text
- http://tdsevsvet.ru/bsa_scout_leader_uniform_patch_placementfl7g7.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/f1ae5248-18eb-49dc-b3c8-e869b14061c3/92504280071.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4f567c12-d693-4811-bbd7-05beb6598783/37213501364.pdfIn PDF document text
- http://xewenometan.epizy.com/76709154769.pdfIn PDF document text
- http://kulebosux.myartsonline.com/english_writing_skills_ssc.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5751847c-07f9-48a0-83b3-f7e22866e7f7/behavioural_interview_questions_and_answers_for_retail_manager.pdfIn PDF document text
- http://vekowaxijoperun.rf.gd/sixamozuvewubuviboxulek.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/98b0757c-3c40-48e7-80f5-c0f389b1b3e5/6866569917.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4d3f9e08-04ff-44fd-9ea7-26bf16725801/john_deere_lt160_parts_ebay.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7cc03391-2fd2-4587-b205-681e86d15e76/1264526907.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4cf379d3-0e69-491e-9785-b2658c7fa84d/jotafu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/52920b67-0c44-4842-b866-dba766a7e89b/developmentally_appropriate_practice_focus_on_infants_and_toddlers.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/58eaa70d-c5db-477c-a95d-bf94b4b529c9/terixepi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e208c81e-90d5-4442-8851-9f3064bc7fa6/90032247549.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_off0001d99d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1D99D | 5224 bytes |
SHA-256: 983126dc31125c7cc1c8c5bc5226a837762a3b494c63378cdae9328b352303de |
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font_01_sfnt_off0001eb55.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1EB55 | 20268 bytes |
SHA-256: d37fe7f9f5dffafd07ede816035d70365c4b1b12203f5a606b78c30b201b5e1a |
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