MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, suggests a lure related to a popular PDF download. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 5
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://yafferge.ru/strik?utm_term=dungeons+and+dragons+5th+edition+pdf+download In PDF document text
- http://vezizulavojunif.22web.org/aviation_exam_question_bank.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370059/normal_5fd67cc60e393.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4376625/normal_605ef03c72e63.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4407777/normal_5ff078952930b.pdfIn PDF document text
- https://cdn.sqhk.co/vekuperik/9FWzehb/black_cheetah_running_shoes.pdfIn PDF document text
- http://fawetugamuxix.66ghz.com/sheet_nhc_kht_vng_ma_xun.pdfIn PDF document text
- https://cdn.sqhk.co/sileluzorupo/MgeGhjc/bubbler_drink_nutrition_facts.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373782/normal_601600d2e7baf.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4459463/normal_6033313909a27.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4469350/normal_60388e80257bd.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366354/normal_5fd63954b85ce.pdfIn PDF document text
- http://taxutipepavij.iblogger.org/functional_analysis_by_pk_jain_free_download.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4403940/normal_601b03e0c28f5.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4412593/normal_5ffd35ea3f2f9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4493553/normal_6018dd44544e7.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- http://pofumitiko.epizy.com/wijajen.pdfIn PDF document text
- http://sokevigaku.rf.gd/mega_early_childhood_special_education_study_guide.pdfIn PDF document text
- http://piwapikefiraxi.rf.gd/comentario_de_texto_argumentativo_resuelto.pdfIn PDF document text
- http://vivefisapef.epizy.com/advanced_sports_nutrition_2nd_edition.pdfIn PDF document text
- http://magobugibex.epizy.com/84153942045.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_off0000f9f9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9F9 | 5400 bytes |
SHA-256: aed9f24609ca9f46ae64afaa93a47abbcd2980855f43aae21dfc6f85d3c9b705 |
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font_01_sfnt_off00010c68.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C68 | 10964 bytes |
SHA-256: f6b9d196b3afe552c33e4f8f99f9a681ea2f7ffbd3377bf48bfcf8b7b8cf0fb8 |
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font_02_sfnt_off000131e0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x131E0 | 4324 bytes |
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361 |
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