MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 Malicious Link
This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, including a critical alert for linking to known malicious redirector infrastructure. The document contains a large number of embedded URLs, many pointing to disposable hosting, suggesting a link farm designed to redirect users to potentially harmful sites. The presence of these links and the overall structure strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 6
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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 contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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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=usmle+first+aid+step+2+pdf In PDF document text
- https://cdn.sqhk.co/bogonelemid/jhcggig/king_s_raid_plug_jp.pdfIn PDF document text
- https://cdn.sqhk.co/kokedipemi/fghha6d/new_hand_tossed_vs_classic_hand_tossed_dominos.pdfIn PDF document text
- http://senteber.site/emulator_ps1_for_pc_windows_10db0oa.pdfIn PDF document text
- https://cdn.sqhk.co/mojobugoge/ia2SSge/20814551864.pdfIn PDF document text
- https://cdn.sqhk.co/nasanoroge/Zj9jfOE/furemapef.pdfIn PDF document text
- https://cdn.sqhk.co/xusarukave/ifiaibe/kabitumaxa.pdfIn PDF document text
- http://dress-russia.ru/oxford_dictionary_of_english_grammar5rn3e.pdfIn PDF document text
- https://cdn.sqhk.co/wizokawoxo/jbiawhh/10726777051.pdfIn PDF document text
- https://logutidukikov.weebly.com/uploads/1/3/1/3/131380383/mejup.pdfIn PDF document text
- http://lnstagramverifiedbadgeshelpcenters.net/omega_juicer_mm900hds_partsho0md.pdfIn PDF document text
- https://cdn.sqhk.co/mosepoxik/aijjjXt/chemistry_gas_properties_simulation_worksheet_answers.pdfIn PDF document text
- https://xulavuxedipi.weebly.com/uploads/1/3/4/0/134017657/51f8c.pdfIn PDF document text
- https://cdn.sqhk.co/wametofenuwo/bjajgib/bisedokufopil.pdfIn PDF document text
- https://cdn.sqhk.co/lunosupi/jajgOys/color_block_cardigan_with_hood.pdfIn PDF document text
- http://zarabatyivat.ru/848202657676dr6f.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://eff7b67d-fef5-45b7-bcd6-ffb1b71d3a14.filesusr.com/ugd/b4c9df_6364ba344b5d4b1a9cdbbbdfd56f4b68.pdf?index=trueIn PDF document text
- https://2903667b-e544-4972-ac7f-e5855aaa9b37.filesusr.com/ugd/2cc660_e666ef50d39a45f29d2c3b7c712abfb8.pdf?index=trueIn PDF document text
- https://a765b249-d442-4b07-8ea9-8318d996b894.filesusr.com/ugd/902d29_e973858fcfa04db2b07ab0a9402c56dc.pdf?index=trueIn PDF document text
- https://4095172d-bd2f-4181-91d7-dd424e653400.filesusr.com/ugd/df73ab_e802fd79fdac459c9b7a68ac11521395.pdf?index=trueIn PDF document text
- https://d427386d-3434-45d9-8802-370857a594f4.filesusr.com/ugd/accd1f_cc93479d17614afa87fdab67003275b5.pdf?index=trueIn PDF document text
- https://ea7788ad-ef5a-48b5-911d-3ad522045378.filesusr.com/ugd/f3bfbb_8798707407f147b780dfbf0e73348537.pdf?index=trueIn PDF document text
- https://0621cc9e-6449-4e8a-a8bd-baee9ad62a2c.filesusr.com/ugd/affb4a_a2d475b4d260421fa8c88c40da412237.pdf?index=trueIn 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_off0000dd02.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD02 | 5308 bytes |
SHA-256: e8aecf2dc9b9b9abe271a3924b524b4efbe7e9f000303fafeeddf569efa8c88f |
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font_01_sfnt_off0000eefa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEFA | 12040 bytes |
SHA-256: 1fc0dc5d5966c65ad7486884d412fb407b18b3763f4b29bceb1d44644a746828 |
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