MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous external links, many pointing to disposable hosting, indicative of a link farm designed to distribute malicious content. The 'English reading book pdf free download' lure in the document body, combined with the high number of external PDF links, suggests a phishing or malware distribution scheme. The ClamAV detection and ML classifier further support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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://vilenefex.ru/strik?utm_term=english+reading+book+pdf+free+download PDF link annotation
- https://cdn.sqhk.co/gidowoji/Ajbsvgc/64569892426.pdfIn PDF document text
- http://jumpfs.space/tejemudivelq9njk.pdfIn PDF document text
- https://jenafowumavadas.weebly.com/uploads/1/3/1/4/131437472/529ec.pdfIn PDF document text
- http://beliyden.xyz/3866478313ybx5h.pdfIn PDF document text
- http://wonder-ita.space/88762102906nytql.pdfIn PDF document text
- https://xonarupitowij.weebly.com/uploads/1/3/4/6/134617661/berububukatupegusex.pdfIn PDF document text
- http://vengriya.space/jozuleveroviripubopanoxoyh8hi.pdfIn PDF document text
- https://cdn.sqhk.co/zunesunatiri/Qhjictf/88974752261.pdfIn PDF document text
- http://reduslim-officialsite.site/modern_dress_designs_patternsug8k5.pdfIn PDF document text
- https://sedezexe.weebly.com/uploads/1/3/4/3/134342112/7294690.pdfIn PDF document text
- https://cdn.sqhk.co/valujoper/hehdjf3/popularmmos_lucky_block_race_2018.pdfIn PDF document text
- http://azalea.store/dosigixamagarime7ozj0.pdfIn PDF document text
- http://reduslim-shopofficial.site/734651377248q7jc.pdfIn PDF document text
- https://cdn.sqhk.co/feripamapuv/cISjfhg/33129691948.pdfIn PDF document text
- http://obmenkalnr.online/sizutumexufokx4nzs.pdfIn PDF document text
- https://cdn.sqhk.co/benibavagoge/yhakhij/word_with_friends_online_login.pdfIn PDF document text
- https://cdn.sqhk.co/bogovureg/XEggjOL/retro_boxing_prints.pdfIn PDF document text
- https://cdn.sqhk.co/viwitukaz/jtij0nN/gestor_de_archivos_para_android_desde_pc.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
- https://7292b199-6d7c-4e84-b646-7854114497ba.filesusr.com/ugd/53361e_5ac2e54ec15f491ebc1303e4ff4adbd5.pdf?index=trueIn PDF document text
- https://4694dce0-4d1e-4c77-b4da-d1f025f82355.filesusr.com/ugd/fb332b_14d933cd9ee6492986829f11b22ad1a8.pdf?index=trueIn PDF document text
- https://0a3c8164-ddd9-4522-8472-457ce31ece15.filesusr.com/ugd/d32f78_72604ed968a9425c97dea908ccd047c6.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010153.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10153 | 5264 bytes |
SHA-256: dd6de9def85e1361cf677bb59c1d562fba2e92a534ab7afb122176478823076a |
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font_01_sfnt_off00011328.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11328 | 11036 bytes |
SHA-256: 04b19c7460f497a9bd1b3f081f1ce93cf9d93056ebf9fa6d6e8286840d9917e8 |
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font_02_sfnt_off000137c2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x137C2 | 4324 bytes |
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
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