Malware Insights
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URLs and the PDF's structure suggest it functions as a link farm designed to redirect users to potentially malicious sites, with one URL specifically mentioning a browser download. The presence of numerous external URIs and a link farm heuristic further supports this. The document body, though heavily obfuscated, contains references to 'Opera browser' and 'windows xp', reinforcing the lure of a software download.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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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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://resalured.ru/123?utm_term=opera+browser+windows+xp+32+bit
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- https://cdn.sqhk.co/fekurisakez/Bdjijfm/30881439142.pdf
- http://mokemowowove.mygamesonline.org/32565626951.pdf
- https://cdn.sqhk.co/kawiwitifa/jNih0pD/xumiwisaxalujaxodumiv.pdf
- http://garanibukumom.scienceontheweb.net/2010_chevy_malibu_power_steering_pump_location.pdf
- http://libopadu.scienceontheweb.net/biomes_of_north_america_pogil_answer_key.pdf
- http://kolagozisil.mywebcommunity.org/cutting_edge_pre_intermediate_teacher_s_book_free_download.pdf
- http://ladiluvame.mypressonline.com/jusiparoralet.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://s3.amazonaws.com/fifuto/imf_annual_report_2019.pdf
- https://1ebfeea1-7d02-43b8-8f0a-002c87bc7f75.filesusr.com/ugd/50dcf6_99ccfdf2be7146fc8c3ea13bdd6a2b53.pdf?index=true
- https://95fbbc11-640f-4658-acdf-6e09da746871.filesusr.com/ugd/e42ee3_ae7e2cb77f494d31b0f2244690e05422.pdf?index=true
- https://148d48ef-a78d-4e34-a4d2-755cfbac042a.filesusr.com/ugd/ccca9b_05504a6e5853498ca9ec1f93678f8765.pdf?index=true
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- 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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e30f.bin7f9a3c21d0c38e81a8d3e36d0a02aad8a96acd26f86899f6c4ccd5f213288f9c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE30F | 5332 bytes |
font_01_sfnt_off0000f543.binb019865b5f35de33eed435a81a07c37a37111000fcae339c1dbb9adddf547610 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF543 | 10892 bytes |
font_02_sfnt_off00011a9d.binb50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A9D | 4324 bytes |
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