MALICIOUS
214
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically `https://yafferge.ru/wix?keyword=acs+general+chemistry+study+guide+quizlet`. Additionally, it exhibits characteristics of a PDF link farm with numerous embedded URLs, suggesting a phishing or SEO manipulation scheme. The ML classifier and ClamAV detection further support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 5
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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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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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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/wix?keyword=acs+general+chemistry+study+guide+quizlet
- https://cdn.sqhk.co/doxinotilid/V6ifz4t/31393362092.pdf
- https://cdn.sqhk.co/tivuzofep/beifggy/juridugesafo.pdf
- https://cdn.sqhk.co/muxuzoxipopa/gwiehjL/jajufemapigumenazoj.pdf
- https://cdn.sqhk.co/zubuwebofe/cfydhhn/live_tv_apkpure.pdf
- https://cdn.sqhk.co/sepufaziru/jIhhhdV/charlie_s_barber_shop_ellensburg.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://907864b8-ab38-4b43-b195-7646ee37c451.filesusr.com/ugd/c4b402_4b643eb713e048dd819b483bcdc3e342.pdf?index=true
- http://vofimefokugof.epizy.com/45382367536.pdf
- http://koxogulu.rf.gd/desupotibizadafetoxezit.pdf
- http://tisenunab.rf.gd/bollinger_bands_binary_options_strategy.pdf
- https://dfa52777-3edb-460f-9b14-ca5101cd4ecc.filesusr.com/ugd/5360f8_1964ac03194c417fab3ebf13943c129a.pdf?index=true
- http://figupowogo.rf.gd/how_to_hang_a_wooden_sign_without_nails.pdf
- https://a0bbd489-bf03-48a0-8e93-88abd0751e5b.filesusr.com/ugd/370ea2_f2b7a1f623bb45489b7422fee0c29610.pdf?index=true
- http://wetizizokixo.epizy.com/wixosilubipilavevukogupeg.pdf
- https://855e1e5b-0daf-4dce-aa73-dfad2bfec5df.filesusr.com/ugd/ced2dc_65585a060a7d4fae81944e4c67c129fa.pdf?index=true
- https://edb7bb8d-792a-4213-93ec-7f573d37cc74.filesusr.com/ugd/bfd504_f3b339105f8f46298a97de98fd6e73ef.pdf?index=true
- https://f8071fb1-33dc-4bb9-9fe9-292e0ca0d861.filesusr.com/ugd/253000_a7f071ba9e1941949293d9cead0b6256.pdf?index=true
- http://nodefojabotozij.rf.gd/5383996343.pdf
- 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://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
- http://scripts.sil.org/OFL
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_004_off000178df.bin5c0a7b0af61386c4d72159432a8e732651cbdea0140d3df54057c7c2057b88dc |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x178DF | 18620 bytes |
font_00_sfnt_off00013c12.bin238275c7824803414632cdcdd5273ff19ee309b7da2f53f864399e25df8882ed |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C12 | 5392 bytes |
font_01_sfnt_off00014e27.bin6c3487a7117ef9eaee74c386a735efcc01c973f0997d66fcdff697e0652ad9b7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14E27 | 13272 bytes |
font_03_sfnt_off00019613.bincd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x19613 | 4324 bytes |
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