MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting it functions as a link farm for phishing or malware distribution. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic further support this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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://pelibifir.ru/strik?utm_term=pals+algorithm+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4453100/normal_603fbed6571f1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375700/normal_605c067556492.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4452595/normal_606e9e2789c47.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4449205/normal_5ff8fe3c4afdb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486344/normal_606c1a901b734.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4475196/normal_6025ba775d864.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4455669/normal_60354ccc10656.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4424011/normal_6019af15b3698.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://237a2310-9536-43ad-add1-fe73b840a51a.filesusr.com/ugd/8b319d_d422ee31cb0c40929960b841e1cc0ffa.pdf?index=trueIn PDF document text
- https://95043331-d9de-4498-ad98-35b8ac3ee23f.filesusr.com/ugd/5740b2_6c45a9b670bb4565ac239573bd8fae2c.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/4a7dc0bd-7b0c-4080-8efe-fbb0c3d41761/que_dia_se_conmemora_hoy_en_estados_unidos.pdfIn PDF document text
- https://1b6fbac1-9b66-4609-9151-81f5d4c316f7.filesusr.com/ugd/5e81b9_aa5d573cc1ed47519d730de4e2673ddd.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/4af4f25a-7a60-44c2-9d34-375ed336bf0a/diaper_pail_regular_trash_bags.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5a296205-f087-4e3d-a176-8f89e7fe6e89/how_to_reset_element_smart_tv_remote.pdfIn PDF document text
- https://3f735f5a-cd1c-4288-bd93-adeff6e084d9.filesusr.com/ugd/bcc0e4_9b01f2cc855a43ce8cb79af34e807131.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/4230be7f-a584-4526-a226-70191c52525b/is_tone_it_up_protein_powder_healthy.pdfIn PDF document text
- https://0fc0baf9-b884-4fcd-968e-f93c0f938930.filesusr.com/ugd/68ec51_0ae7cf9c0d6d4e928d4c96c69aa48f31.pdf?index=trueIn PDF document text
- https://b67fa923-03b4-4d21-b555-95ff628d7525.filesusr.com/ugd/1d4b90_ac4ee13ae0624de49bc2127ce50ff5ca.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/40a3cfb3-d73a-42ea-9edd-7d7bddcb5b13/table_topics_ideas_2020.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/479ba297-e817-48d0-9f47-ef325421f3da/15240054859.pdfIn PDF document text
- https://75ca6b5e-a470-4e0e-8004-b00a9f1721b4.filesusr.com/ugd/1e4819_d1f03db048bd48c2a84b9eacd670c984.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_off00011f9a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F9A | 5456 bytes |
SHA-256: a84da0920e82257f07cb701c5a9306a0263a4edbfe3030abdab6490968637255 |
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font_01_sfnt_off000131fc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x131FC | 11348 bytes |
SHA-256: ba7c68ac90b54614eab968091dffab46f44c2bf103727afe99ae78e815102bf3 |
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