MALICIOUS
226
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
This PDF document exhibits characteristics of a phishing lure, specifically using a 'browser extension/update installation' social engineering tactic. The presence of numerous external links, many pointing to disposable hosting, suggests an attempt to distribute malicious content or redirect users to phishing sites. ClamAV detection and ML classification further support its malicious nature, likely involving the exploitation of PDF vulnerabilities to execute further stages.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 7
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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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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://seumenha.ru/wix?keyword=fisher+price+skyway+race+track PDF link annotation
- https://static.s123-cdn-static.com/uploads/4383806/normal_5fed402e86eef.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4485004/normal_600ac6cf1d5aa.pdfIn PDF document text
- http://workbykoder.xyz/36751086757jopld.pdfIn PDF document text
- http://vseti.life/happy_birthday_punjabi_song_djyoungsteryf8en.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387037/normal_6022cded573a8.pdfIn PDF document text
- http://itravelimpressions.com/sixisufuxoperazeraninhac0.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4453336/normal_5fc9eb8a9f05d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4458148/normal_603721c952220.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://5c3e38fa-bf2d-4cda-bfdc-19e9a39f2227.filesusr.com/ugd/b3ada4_447a77d5a0554e5aaf96ed299e0dae7b.pdf?index=trueIn PDF document text
- http://zejuruk.rf.gd/bullet_raja_movie_song_ming.pdfIn PDF document text
- https://dbba0f06-1911-40f0-8c80-a2638c7f81cc.filesusr.com/ugd/b13fd1_c900a9cc22f34c7a9b4915be828dcf2b.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/5bf12a17-ac2b-4dc8-b540-bb60a97c1ab3/defiant_motion_security_light_blinking.pdfIn PDF document text
- https://e5baaea7-7007-41de-9367-4ebf3ed55875.filesusr.com/ugd/8e1900_2edd06c2c8a24b39947152cb78ae39a1.pdf?index=trueIn PDF document text
- http://lamumabazekutum.epizy.com/algonquin_park_trail_guide.pdfIn PDF document text
- https://451b78f8-089e-4d4d-bc4b-60abb621f7e6.filesusr.com/ugd/7ef0dc_a01838b9e90442669d679885189a3246.pdf?index=trueIn PDF document text
- https://9b321a86-0615-40a7-b684-6dced782f4cc.filesusr.com/ugd/e3cae3_4fd33fabfa0849a7b38f7f2f46ced8f3.pdf?index=trueIn PDF document text
- http://tegajapo.rf.gd/4256218782.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5afef03e-9206-4b8e-beac-9d5ca8960e8f/sexisivamugimikifewal.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f7d3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7D3 | 5200 bytes |
SHA-256: 2a7ab980498d2239ae316b3d60a06fee02c894c0c337e3a5082c9b3603d4201d |
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font_01_sfnt_off0001099b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1099B | 10284 bytes |
SHA-256: bbc69685c16e6a5c7e7e5f1504e2dadfad5cad6ad9a831a277085b7bb5396c17 |
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