MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains multiple embedded links, with at least one pointing to known malicious redirector infrastructure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and the ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to 'addition and subtraction of vectors pdf', likely to trick users into clicking the malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9988
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://crophysi.ru/strik?utm_term=addition+and+subtraction+of+vectors+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4459787/normal_60374ca76e860.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4459916/normal_605d57f1302d8.pdfIn PDF document text
- http://hookup157.fun/wuzisijalugupidulewacv7nx.pdfIn PDF document text
- http://mowefopovog.mywebcommunity.org/jefinon.pdfIn PDF document text
- http://sawedes.mywebcommunity.org/96559519307.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4472200/normal_6050fab1546e3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4418970/normal_6021f11fbd18f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4390092/normal_601ae3da875a3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4461232/normal_604148ec0c701.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4466364/normal_5ff8f38995984.pdfIn PDF document text
- http://hookup755.fun/tapajinkaggq.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4461216/normal_5ff04acb6d1ee.pdfIn PDF document text
- http://madewithsunshine.com/bofuvajiduwakugznz7.pdfIn PDF document text
- http://znalomstvavip.site/415667659780s4aw.pdfIn PDF document text
- http://notdull-eng.online/547429445888omwu.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/ccf3caad-01ba-4bfb-a6d4-fd528ac607a8/82095495241.pdfIn PDF document text
- http://bodegifu.atwebpages.com/48936180103.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3f86361b-a3ce-4340-8672-0753ff6a7933/12878644663.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/402ebdab-5654-4ca5-a13c-d037e20069cb/who_is_andrea_roth_married_to.pdfIn PDF document text
- http://wenares.myartsonline.com/samsung_nx300_price_south_africa.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b6a440d1-7f2b-46e1-bfda-e659dfc5b90b/22001529334.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c7a1839b-2172-4d22-9d3e-15fd33783c0d/38932354865.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a9e7e5d7-10c7-4d38-92ac-ee1c50385f02/better_business_bureau_philadelphia_pa_phone_number.pdfIn PDF document text
- http://timojodabemisux.myartsonline.com/my_ambition_in_life_essay_in_english.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010ced.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10CED | 5304 bytes |
SHA-256: 8dd75b8dac109ed97bab9001121dc69c5eff84f85667220b04f06f7a47e6d682 |
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font_01_sfnt_off00011f10.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F10 | 10816 bytes |
SHA-256: 4473f686524b8a3900ca549bcbdab6722b10c7c72001dd5058af15adb8321a0c |
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font_02_sfnt_off0001447d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1447D | 16152 bytes |
SHA-256: 9dd161ad083bde31f1785977080a21cd00ffd1d65af7312c0685ba069ea0c2ef |
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