MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically identified as a phishing or trojan. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm designed to redirect users to malicious sites. The primary malicious URL identified is https://pelibifir.ru/strik. The presence of embedded JavaScript, though not fully analyzed here, further supports the malicious intent of the document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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://pelibifir.ru/strik?utm_term=what+are+the+5+major+branches+of+philosophy PDF link annotation
- https://lipuxavevafip.weebly.com/uploads/1/3/1/3/131398459/7513197.pdfIn PDF document text
- https://nokesopupikes.weebly.com/uploads/1/3/4/7/134767934/nebamugi_fujumifal.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4484370/normal_5ff333e021276.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426690/normal_605c370a21a5c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4457298/normal_6027d0a1d8a8d.pdfIn PDF document text
- https://bemafaparad.weebly.com/uploads/1/3/2/6/132681832/5842593033374.pdfIn PDF document text
- https://jizuxiragoleti.weebly.com/uploads/1/3/4/6/134639642/7401325.pdfIn PDF document text
- https://rewusimivizegan.weebly.com/uploads/1/3/4/5/134578415/fujoxepusav.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4450640/normal_600f15ed71b52.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4415526/normal_60052ba94b0c9.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://uploads.strikinglycdn.com/files/e5bc1f89-b862-4b86-8919-72d50580ac12/oedipus_rex_play.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/180804bc-c876-4f52-869b-5ab1d6d3bb49/microsoft_outlook_2010_vs_2016_comparison_chart.pdfIn PDF document text
- https://s3.amazonaws.com/nimuwet/ms_word_user_guide_template.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3bdca08b-df78-4acb-a9dd-4ff228529f52/bose_companion_2_series_iii_specs.pdfIn PDF document text
- https://s3.amazonaws.com/remavuj/metodi_naturali_contro_le_formiche_in_casa.pdfIn PDF document text
- https://s3.amazonaws.com/xupovobejanam/massacre_haunted_house_movie.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/713c2d38-25dd-4970-a85d-b18e5f84a5de/tepugasuparogiserefu.pdfIn PDF document text
- https://s3.amazonaws.com/supefujoxopubu/65461571193.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e6f8bd0e-25b1-43e0-8b18-b06eb3ea3505/28272127326.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b5ec74b7-ec51-447a-86d3-8ad577696e32/hard_probability_problems_with_solutions.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0ddaacd5-980d-493f-aed3-fd968c8cea06/43666451691.pdfIn PDF document text
- https://s3.amazonaws.com/davolazupivowi/cancer_information_analyst.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cc0de8e5-f5be-4a98-8c8f-d809762fcbca/numerical_analysis_solutions.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ec3a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC3A | 5708 bytes |
SHA-256: 0aba5a2ad492f0ea1fbed5f35b433511d0eaf30c74b6ceaaef792da2e66b8b3d |
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font_01_sfnt_off0000ff9d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF9D | 10476 bytes |
SHA-256: f4c9abe7bf46cce487a8cbf4d8dfbe0e5f1b9e9254d9328f1e4c24c78f98c30d |
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font_02_sfnt_off0001239f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1239F | 4248 bytes |
SHA-256: 3dd4a276f979c4f01201d2445ae7a3b63b2f8c5360597b5f5aa017082962eb4c |
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