MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded links to known malicious redirector infrastructure, specifically pointing to 'https://yafferge.ru/123?utm_term=popular+backpack+brands+90s'. The ML classifier and ClamAV detection strongly indicate malicious intent. The document appears to be a link farm designed to lure users to potentially harmful websites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
Heuristics 5
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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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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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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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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://yafferge.ru/123?utm_term=popular+backpack+brands+90s In PDF document text
- http://roflan.site/69744719985jwwbz.pdfIn PDF document text
- http://basiditdcf.space/84063522104rcmhj.pdfIn PDF document text
- http://shtangye.xyz/juliet_takes_a_breatha7zrk.pdfIn PDF document text
- http://letnesil.xyz/flip_dunk_gameplayzxkcs.pdfIn PDF document text
- https://mixuzurul.weebly.com/uploads/1/3/2/3/132303374/mosuzizojeno.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4463529/normal_5ffbc2379a557.pdfIn PDF document text
- http://orbitan.fun/490546214717yqwo.pdfIn PDF document text
- https://muvanuxeb.weebly.com/uploads/1/3/4/0/134096654/manesunamude_finema.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4500679/normal_5fc8888b1bc42.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/zakunafu/hypertension_treatment_guidelines_during_pregnancy.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_off0000efe6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFE6 | 5568 bytes |
SHA-256: 73a6b7486ad09291f973665c572b321908dfd5c88f5de7327f6b6a1c30eaad91 |
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font_01_sfnt_off000102c7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x102C7 | 2044 bytes |
SHA-256: 9812099c5b295b859b411b79c63ef0f3e15cad7fffbe3efb0a8bc6b6c1165317 |
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font_02_sfnt_off00010c34.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C34 | 12248 bytes |
SHA-256: 5f72afd411f5dd417f7950c580f9e5dcbef18ae77411451d52fd7629b32b033c |
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font_03_sfnt_off00013565.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13565 | 17660 bytes |
SHA-256: 05f5f24bd41c915d0e8e1f96160c35e4c3a73c6355df4691c6fcac5597beed7f |
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