MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, with at least one pointing to known malicious redirector infrastructure (https://yafferge.ru/strik). The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create malicious PDFs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9994
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/strik?utm_term=bsa+camping+merit+badge+powerpoint In PDF document text
- https://mixojokujize.weebly.com/uploads/1/3/4/3/134387696/1637198.pdfIn PDF document text
- http://zekojotewakugag.mypressonline.com/16515217210.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4464878/normal_5ff9d310890e6.pdfIn PDF document text
- http://retamos.mygamesonline.org/35720658156.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4464739/normal_5fd9e1077c4be.pdfIn PDF document text
- http://nageramuvepom.mywebcommunity.org/libro_cien_aos_de_soledad_de_que_trata.pdfIn PDF document text
- http://matras-24.ru/kamanefasudovusemegenasatj1ugl.pdfIn PDF document text
- http://load-bcp.com/gods_of_the_fall6qrcu.pdfIn PDF document text
- http://povisowalikim.scienceontheweb.net/beauty_and_the_beast_theme_piano_sheet_music.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4383929/normal_6004addb7f75d.pdfIn PDF document text
- http://zavulibalox.mypressonline.com/85267285906.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454435/normal_6013a12858990.pdfIn PDF document text
- https://razisosip.weebly.com/uploads/1/3/0/7/130739291/rerukopisijas-xulezovelabolot-fomogaz-sikuzo.pdfIn PDF document text
- http://geparup.scienceontheweb.net/4098828284.pdfIn PDF document text
- http://leyloften.online/next_ward_island_ferry153m7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417997/normal_602c13a9ca7cc.pdfIn PDF document text
- https://danigutido.weebly.com/uploads/1/3/1/1/131163693/d1c32b4f.pdfIn PDF document text
- https://tagopudul.weebly.com/uploads/1/3/5/3/135392217/4032395.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://xalixonawi.atwebpages.com/dovijasululeligelemu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a7da903c-059f-4a82-b7f1-c0fdb21ac5b6/foxon.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d67bd6d6-2b78-4b11-aacc-d64d28859c90/14123854717.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b1478ee6-3fd6-45dd-806a-a15a5f37cdaf/39662057440.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9a3a6b9a-c29a-4e8d-b006-fcd69a1f6f91/the_prayers_of_a_righteous_man_availeth_much_meaning.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_off0000f520.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF520 | 5644 bytes |
SHA-256: 91e55482dbf4284aa279fefc4a1169f2330cd296099ffac1c265e433ef368dcb |
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font_01_sfnt_off00010844.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10844 | 10888 bytes |
SHA-256: 36648de99e120521d3e0391164dde1f0e101d7b7741632e336e23ba1d7fc1607 |
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