MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
The PDF file contains a large number of external links, many pointing to disposable hosting services, indicative of a link farm or phishing operation. The ClamAV detection and ML classifier strongly suggest malicious intent, specifically identified as Pdf.Phishing.Trojan. The embedded URLs, such as 'https://nipisod.ru/strik?utm_term=read+and+speak+korean+for+beginners+book', are likely used to redirect users to malicious content or phishing pages.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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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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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://nipisod.ru/strik?utm_term=read+and+speak+korean+for+beginners+book PDF link annotation
- https://towodoruzaxigol.weebly.com/uploads/1/3/6/0/136050186/9607032.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4467581/normal_60061e0932be4.pdfIn PDF document text
- http://damvglaz0.xyz/pali_canon_meaning_in_englishyqjez.pdfIn PDF document text
- http://latencfsrt.space/whirlpool_bottom_freezer_refrigerator_not_cooling_or_freezing55k4h.pdfIn PDF document text
- https://fijoxivivuf.weebly.com/uploads/1/3/4/0/134041864/7838e4d3b2.pdfIn PDF document text
- http://baby-slings.ru/dipemuzabidanowilolokava9j946.pdfIn PDF document text
- https://zezawimikosalef.weebly.com/uploads/1/3/5/3/135329884/tazun-xukupuwusolud.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408348/normal_60655553d5c90.pdfIn PDF document text
- https://vamotavobepud.weebly.com/uploads/1/3/1/4/131438348/5350241.pdfIn PDF document text
- https://bigevavez.weebly.com/uploads/1/3/4/0/134016854/7476779.pdfIn PDF document text
- http://003-center.ru/sab_gertrudis_gomez_de_avellaneda_analisisp4sxz.pdfIn PDF document text
- https://zepukuliro.weebly.com/uploads/1/3/5/9/135964459/f854441d.pdfIn PDF document text
- https://jazolesapixol.weebly.com/uploads/1/3/1/4/131453041/2088917.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://uploads.strikinglycdn.com/files/3c591ff8-ccc1-40b0-88da-e96dd3187e0e/criminal_defense_attorneys_in_houston_texas.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/65d9e857-d976-48a8-9a9b-92b6440fbc81/madutimurunarujibasexedi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/58f26ee8-6732-4238-a9ff-6964637b2e7b/latest_john_grisham_books_in_order.pdfIn PDF document text
- https://s3.amazonaws.com/dipafuxe/risivoput.pdfIn PDF document text
- https://s3.amazonaws.com/jejulurowev/infinite_painter_user_guide.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_off0000f9b0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9B0 | 5096 bytes |
SHA-256: 31281a2b89ace17bafc6de8221a637237fdeee7eaf39f0c501ed2040df529c97 |
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font_01_sfnt_off00010b0d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B0D | 10936 bytes |
SHA-256: 459da5220c71a5915c79247ff4546d12268844a3a1534df8dbb28a0a949d15dd |
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font_02_sfnt_off0001301d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1301D | 4324 bytes |
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e |
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