MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://yafferge.ru/infin?keyword=c+wpf+expander+template'. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the presence of a malicious URL strongly suggests an attempt to lure the user to a harmful site, likely as part of a phishing or malware delivery scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 5
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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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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/infin?keyword=c+wpf+expander+template In PDF document text
- https://static.s123-cdn-static.com/uploads/4369764/normal_5fcc37903d43b.pdfIn PDF document text
- http://fijeveg.iblogger.org/wodexepese.pdfIn PDF document text
- http://kataeta.club/3389643236dd219.pdfIn PDF document text
- http://simcars.ru/wagon_wheel_violin_sheet_music_darius_ruckerc1d4z.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4464083/normal_6002ed10ea003.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4413363/normal_600616425a979.pdfIn PDF document text
- http://sokinabunerir.iblogger.org/java_jdk_linux_mint.pdfIn PDF document text
- http://strahuemsya.info/327108325115ca0g.pdfIn PDF document text
- http://moviesaddaa.online/wewexusoveoix2f.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4379222/normal_5fc7c5d7485ba.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/kasuwevovog/kajalelosul.pdfIn PDF document text
- http://vuruketunuwu.epizy.com/bhopal_express_hd_movie.pdfIn PDF document text
- https://s3.amazonaws.com/xasovewipeje/sing_gary_barlow_piano_sheet_music.pdfIn PDF document text
- https://s3.amazonaws.com/wupuxus/guvusedopikibibesif.pdfIn PDF document text
- http://wozawexopad.epizy.com/bhulekh_mp_app.pdfIn PDF document text
- https://s3.amazonaws.com/dikobepibelun/50943604735.pdfIn PDF document text
- https://s3.amazonaws.com/tosego/75878811.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_off00011332.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11332 | 5076 bytes |
SHA-256: 7e9f257e1ac11265ea3ca6baf617f6e619f2b7efe4d9bee980a49138db88fe72 |
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font_01_sfnt_off00012474.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12474 | 15396 bytes |
SHA-256: 9cb115562d427602e2a57a7197cba3f30e7cf3cf03999a4835e1cb03531dbfc2 |
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