MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. One of the primary links points to 'https://pelibifir.ru/wix?keyword=mutually+exclusive+events+worksheet+gcse', which is likely a lure to a phishing or malware distribution site.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
Heuristics 6
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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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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://pelibifir.ru/wix?keyword=mutually+exclusive+events+worksheet+gcse
- https://cdn-cms.f-static.net/uploads/4405194/normal_6029f249a472b.pdf
- https://cdn.sqhk.co/juxerawabuf/5vjducb/sijukuseze.pdf
- https://sudororurupe.weebly.com/uploads/1/3/4/6/134602833/9814859.pdf
- https://talosemes.weebly.com/uploads/1/3/4/4/134494853/94474f61e2960.pdf
- http://goguduve.iblogger.org/homedics_405_digital_scale_manual.pdf
- https://static.s123-cdn-static.com/uploads/4420468/normal_5ff33a51619fd.pdf
- https://cdn.sqhk.co/wimiwupo/6aoWgix/disaster_will_strike_2_level_58.pdf
- https://cdn.sqhk.co/dijowasedop/ziiisjb/87264816016.pdf
- https://cdn-cms.f-static.net/uploads/4401716/normal_5fd9afca205f6.pdf
- https://cdn-cms.f-static.net/uploads/4383917/normal_604460a857d5b.pdf
- https://cdn.sqhk.co/nomitusibop/ec4HgfO/94589040791.pdf
- https://dovejopizodumu.weebly.com/uploads/1/3/4/8/134883147/9085071.pdf
- https://xegejigavo.weebly.com/uploads/1/3/4/8/134883842/4224324.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- http://vopapokolozanum.rf.gd/food_dehydrator_trays.pdf
- http://nagajawonusagu.epizy.com/xobumit.pdf
- https://899154e9-876a-4ab4-94d5-c8ef2aed10f2.filesusr.com/ugd/dcf9ad_56869c38ec6f46bbb4ceba5912c4bd17.pdf?index=true
- https://uploads.strikinglycdn.com/files/5e35de5c-bfdf-4fc5-9a62-ef8e34316c9b/finding_ultra_cleanse.pdf
- https://aa4c2489-c93b-4667-afab-104bf5323bad.filesusr.com/ugd/8b49c6_019b28b64f7949b5b72576256f7f4c94.pdf?index=true
- http://tilukonera.rf.gd/cisco_3850_wlc_configuration_guide.pdf
- http://pixuxurarosu.epizy.com/duruzasuju.pdf
- https://uploads.strikinglycdn.com/files/1d845779-ad98-4ec5-abd6-768728063dec/40233805871.pdf
- https://e321b6f2-2a0a-4c58-8c60-26baf46d82f1.filesusr.com/ugd/14900c_c193320417b043fe995bf618e5a7fbb2.pdf?index=true
- https://932aa67c-856a-4fda-9fc8-fe3f50d4acc2.filesusr.com/ugd/a25eee_8863ebef44d24a77955d114a85018e54.pdf?index=true
- https://0eaabcdb-938a-45a6-85a3-1a7d796bbcdd.filesusr.com/ugd/8d6d25_7f2e2fc56f8b4e208df4ee2edd8b672c.pdf?index=true
- 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_off0000fbc7.binb128fd47f2843327d9bf8359a0588818b72f509d7137f2b9f7a1e96c6dff2f09 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBC7 | 5332 bytes |
font_01_sfnt_off00010e02.bin3fe531deffd0e7781c9e9ab304fbdcff261a8f49ac4d9bc1634dfe44eee879ef |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E02 | 11712 bytes |
font_02_sfnt_off000135d2.binff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x135D2 | 4324 bytes |
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