MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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://leonvi.ru/123?utm_term=ctet+2019+last+date+form+fill PDF link annotation
- https://cdn.sqhk.co/fusevesapime/iny3y6X/22853528230.pdfIn PDF document text
- https://cdn.sqhk.co/dodiniwotud/gigaicp/music_theory_quiz.pdfIn PDF document text
- https://cdn.sqhk.co/kamupudoro/giiaLjb/online_auctions_winchester_va.pdfIn PDF document text
- http://gafowegane.iblogger.org/25680653227.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://b634734f-67aa-4edc-9b69-dcf7610e4690.filesusr.com/ugd/c86859_cf515dd904244d5f8f93a36410bf9115.pdf?index=trueIn PDF document text
- https://6129906d-bc82-46a7-99f5-71793a58af3c.filesusr.com/ugd/d162e3_26d9beb42ae441a2870b36d269b213f6.pdf?index=trueIn PDF document text
- http://gujomodezeroj.epizy.com/abu_garcia_silver_max_spinning_reel_parts.pdfIn PDF document text
- https://0d555108-1732-4721-8d72-76d747b2053a.filesusr.com/ugd/1b0481_0f8353618a4d4fe0b4a2222cde416565.pdf?index=trueIn PDF document text
- https://c2963e02-5f2a-49ff-bb4d-22715b80ab3a.filesusr.com/ugd/55efe4_767622cdb68340c286d78bd7f2f5c7ed.pdf?index=trueIn PDF document text
- https://e9abb47e-19e5-4ec2-9f3c-2aa4e6f2bf0a.filesusr.com/ugd/92be99_6658017da613473a82e2ab7406c86395.pdf?index=trueIn PDF document text
- https://f1801c53-b3f5-4b94-a9b3-4bb8eb376a66.filesusr.com/ugd/af633f_91b850b8902f43a5bd338856691c8e04.pdf?index=trueIn PDF document text
- https://fa5d8e44-005d-4c05-925d-ba60cb7f5023.filesusr.com/ugd/121e37_4b1224efe34e4d468e6089da4d983859.pdf?index=trueIn PDF document text
- https://091a8774-b5bd-4fb7-8799-8d1ca0ca44ad.filesusr.com/ugd/8716ab_ffcd34ef8a5c40f0b205504fc1d92804.pdf?index=trueIn PDF document text
- https://368051e9-4199-40ea-b9a2-dc6e6f83cb3b.filesusr.com/ugd/6260fe_b11543c9399b4ea98478d9803ab46fb0.pdf?index=trueIn PDF document text
- https://a52dd608-e7dd-4d50-8005-e0fd7a3896b4.filesusr.com/ugd/43d2fc_4f677ac68ee94ff1ac5b79e19100ec68.pdf?index=trueIn PDF document text
- https://d6ac5066-27fc-4e71-a07d-b30af50dfe8b.filesusr.com/ugd/934fc3_266bce9f2515441fa3715b5da9ff4e96.pdf?index=trueIn PDF document text
- http://fepufikegag.rf.gd/rawivokobodonipoka.pdfIn PDF document text
- https://9e9203d9-9f5b-42f2-a849-05e42d741f90.filesusr.com/ugd/3527d5_e353bb31c5714dd8b68f2cd433b3a56f.pdf?index=trueIn PDF document text
- https://313cea95-bd78-4864-9d9d-3b26c3bbe0bd.filesusr.com/ugd/2142af_58a7a9d1a2f044829230ef5952a8349a.pdf?index=trueIn PDF document text
- https://9b56c271-8e60-4ff0-96d1-8930f8c082f8.filesusr.com/ugd/5a1ab0_f5b16d0f510c4feca005554f604b3fac.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f292.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF292 | 5440 bytes |
SHA-256: 77733e995264a13d0d5228e44174fe1d57581e681f8df77e7832aec17ed00271 |
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font_01_sfnt_off000104fb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x104FB | 10788 bytes |
SHA-256: c8e164b610f31f643135e778169aac160a2890669000602c4212eb62a91400ae |
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