MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was flagged by multiple heuristics as a link farm and a potential phishing or malware distribution vehicle. The document body, though heavily obfuscated, contains text related to 'Clases de guitarra online gratis', suggesting a lure. The numerous external URLs, including 'https://nipisod.ru/strik?utm_term=clases+de+guitarra+online+gratis+para+principiantes+acustica', indicate an attempt to redirect users to malicious sites. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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=clases+de+guitarra+online+gratis+para+principiantes+acustica PDF link annotation
- https://static.s123-cdn-static.com/uploads/4409246/normal_5feb4f065d8d8.pdfIn PDF document text
- http://easy-money-cash.space/wunaporezudozezozijed3raur.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412173/normal_6035cbd9165e4.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4462736/normal_5fcc0243bbe8f.pdfIn PDF document text
- http://paksorond.xyz/xuzedumomezirimuwafiwif5wht.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4391621/normal_601f861112c5c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4409997/normal_5fe8161021223.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4419626/normal_602ad3ffe34d3.pdfIn PDF document text
- https://gowumobajakexe.weebly.com/uploads/1/3/4/5/134585768/8ecea576e48e.pdfIn PDF document text
- http://wawewifebobojum.22web.org/java_arrays._binarysearch_performance.pdfIn PDF document text
- https://minunelojob.weebly.com/uploads/1/3/1/4/131453060/figemajudotosifakabo.pdfIn PDF document text
- https://pasezarovatif.weebly.com/uploads/1/3/4/8/134858127/dbe4d798b6f982.pdfIn PDF document text
- http://gatorama.site/adobe_premiere_pro_video_editing_tutorial_in_hindixou4p.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://ketoxuxun.epizy.com/81344782659.pdfIn PDF document text
- http://dasetalolup.epizy.com/child_and_adolescent_development_2nd_edition.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/68190cb8-643e-4d6a-b339-d76ca6337bf0/pugenobonufeluw.pdfIn PDF document text
- http://buwobazakosujo.rf.gd/roruvizigafekididotalu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c4c56839-44ff-4012-9a1b-f0fdeaac3299/how_to_get_rid_of_suicidal_thoughts_wikihow.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3af3e5aa-4d65-4939-9c96-bd882aed4e37/alita_battle_angel_full_movie_2018_telugu.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000fdd7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDD7 | 5144 bytes |
SHA-256: 6a8abe6763ae4737ac59ea873613aeadbc5fdfa8dfdadf7fa3299e821e1c7ab4 |
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font_01_sfnt_off00010f5a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F5A | 1800 bytes |
SHA-256: 6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee |
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font_02_sfnt_off000117ea.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x117EA | 12164 bytes |
SHA-256: 4338420e98cf4275246da4f6a27b7072d91229e4920307fe4479a35314768541 |
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font_03_sfnt_off00013f0d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13F0D | 16312 bytes |
SHA-256: b2563e85233037e3c2780690ed1455257f868516b5a962e54e6ffe29314c9cb1 |
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