MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, includes text related to 'Calculo vectorial ejercicios resueltos', likely a lure to entice users to click the malicious link. No scripts were extracted, but the presence of a malicious URL and the ML classifier's high confidence suggest a phishing attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 4
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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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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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://cctraff.ru/strik?utm_term=calculo+vectorial+ejercicios+resueltos
- https://cdn-cms.f-static.net/uploads/4418557/normal_5f9996811dc39.pdf
- https://cdn-cms.f-static.net/uploads/4371005/normal_5f8a5a141b43a.pdf
- https://cdn-cms.f-static.net/uploads/4378170/normal_5f9cdbb40fc37.pdf
- https://cdn-cms.f-static.net/uploads/4368227/normal_5f9b54be08202.pdf
- https://cdn-cms.f-static.net/uploads/4411932/normal_5f9b80ad53215.pdf
- https://cdn-cms.f-static.net/uploads/4379971/normal_5f9c81113bb41.pdf
- https://cdn-cms.f-static.net/uploads/4368504/normal_5f9cb5d84a220.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/602569c3-d77a-48d9-9871-5298ff7a7882/61672876084.pdf
- https://uploads.strikinglycdn.com/files/8e5f5694-fd6e-48e3-8266-b77284036f92/ripufigasunonojav.pdf
- https://uploads.strikinglycdn.com/files/d6494032-cdd8-4ab1-aacd-95b782a1cd08/caught_ya_grammar_with_a_giggle.pdf
- https://uploads.strikinglycdn.com/files/f413db29-d31d-4a13-9af9-1679a790b3f6/puertas_y_puentes_ligeros_mod_para_m.pdf
- https://uploads.strikinglycdn.com/files/1146fde5-7c25-49eb-8cee-65354fc9eb2d/jarijozevanadumobefojazid.pdf
- https://s3.amazonaws.com/firudegix/vobedorojetod.pdf
- https://uploads.strikinglycdn.com/files/2402b4dd-29aa-47a8-9a83-fa71a3841f7d/62488696443.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b40a.binee4085c58b798def3ab8dcbf44e3751689ef6b3fd2558cfd6e985ff8fa4b569b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB40A | 4836 bytes |
font_01_sfnt_off0000c48b.binb5495c847ad101cb0706913b1ea4cc9fe7d04cf02c3cc893e4e69516ebe4ef17 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC48B | 10360 bytes |
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