MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO spam operation. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The embedded URL and the presence of PDF_SEO_LINK_FARM heuristic confirm the primary attack vector is directing users to external malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
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://baarspo.ru/wix?keyword=realidades+2+capitulo+6a-5+answers PDF link annotation
- https://cdn-cms.f-static.net/uploads/4391047/normal_5fd332429927b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4422133/normal_60563819b427d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374022/normal_5fe6944d4466a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412767/normal_602beaf860951.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4463810/normal_605c674117d99.pdfIn PDF document text
- http://dvestideyli.xyz/maze_runner_series_plot_explainedu4da6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4404529/normal_602c94f0a0a27.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4488130/normal_603a55f690f16.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4489843/normal_5fce4bdd96b54.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449602/normal_60394415e6047.pdfIn PDF document text
- http://italywow.space/yard_machine_snowblower_5.5_hp_22_inchw8t1a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4368495/normal_5ff850315aac2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367927/normal_604fbbc785019.pdfIn PDF document text
- http://megatorg.ru/furivelomosurfcke.pdfIn PDF document text
- http://help-violation.com/phonetic_alphabet_nypdo9gs4.pdfIn PDF document text
- http://domsale.xyz/48401495179b2twb.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://0b7b936c-93ac-4a60-9644-6ba220b934cc.filesusr.com/ugd/b4bf80_f3abf11254fb4b0bb033faa1c583d2ee.pdf?index=trueIn PDF document text
- https://3c4962d9-41f7-4f14-8396-dad57cc8de20.filesusr.com/ugd/a2de88_6af1bd0470e44f68acef1ad00393bb53.pdf?index=trueIn PDF document text
- https://77da94c0-0f0a-445b-87af-e489a0b5ef66.filesusr.com/ugd/db1da1_b6b8a53783e54c358599d6042273a60f.pdf?index=trueIn PDF document text
- https://9afb1793-bc57-4514-bb46-74e980466609.filesusr.com/ugd/11f207_f0e1f11849a441ecb40d3ed21c8222d9.pdf?index=trueIn PDF document text
- https://e1ca4115-fb55-43f9-84f1-eaf814f8c83f.filesusr.com/ugd/18122d_f5879cc7039b42e88d40adcc608ca3ee.pdf?index=trueIn PDF document text
- https://fb413987-6e77-4bf1-aaa6-e97eb550fbee.filesusr.com/ugd/108936_23a313b94c5e4b148d4914a95f618fe0.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000efb4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFB4 | 5608 bytes |
SHA-256: df91ce04ca30bc595d58431abb510c536e5e837fba50de82a9049359bb8ac9b1 |
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font_01_sfnt_off00010300.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10300 | 11192 bytes |
SHA-256: 7cbba3272648ddfc9dbfc841d1bf59b6ecfb66431f39fd28f9575be2d7dbfe84 |
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font_02_sfnt_off00012942.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12942 | 16140 bytes |
SHA-256: 159427b32ed66bfbde86def5e6c2992bde67dfb25400c4000a37c9b59b949b61 |
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