MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF document exhibits characteristics of a phishing lure, impersonating a document signing service. It contains multiple external links, with a critical heuristic identifying a link farm pointing to various PDF files. One of the primary URLs, 'https://jumiwimov.ru/strik?utm_term=how+to+insert+signature+in+google+docs+on+ipad', suggests a pretext related to document signing or editing. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for credential harvesting or further payload delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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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Document signing service impersonation lure medium SE_DOCUSIGN_LUREDocument impersonates DocuSign, Adobe Sign, or a similar signing service in a signing-request context
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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://jumiwimov.ru/strik?utm_term=how+to+insert+signature+in+google+docs+on+ipad
- http://show-visitor.xyz/what_does_marginalized_population_meanrvz2y.pdf
- https://cdn-cms.f-static.net/uploads/4412894/normal_605ac1dca8b20.pdf
- http://virona.org/182037134957cbry.pdf
- http://antonioit.fun/foxit_reader_printer_setup6nra0.pdf
- http://werenntaq.online/how_to_install_hp_officejet_6500_wirelessc8n58.pdf
- https://cdn-cms.f-static.net/uploads/4373998/normal_604d96b1b24a1.pdf
- http://finovadi.iblogger.org/6732156252.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://uploads.strikinglycdn.com/files/29287f2f-233a-448a-8c2b-be46ce9a2a6f/do_tattoos_fade_away.pdf
- https://s3.amazonaws.com/nawuvud/bovuzixatonan.pdf
- http://zelibigevuloxuj.epizy.com/9297366521.pdf
- https://c370dac7-4848-4fa0-a6df-94361299e8ba.filesusr.com/ugd/fa6303_836caae9a8404e1a95bc1be726a9e313.pdf?index=true
- https://s3.amazonaws.com/tumasun/bezutevexaxomozowu.pdf
- https://s3.amazonaws.com/zarelusipofox/64153138111.pdf
- http://wexavow.epizy.com/taviluwafom.pdf
- https://75edee45-cd08-43cb-a752-0c33e5c2343f.filesusr.com/ugd/a7c173_90de73bc2cdb4c589b503040fc8e4112.pdf?index=true
- https://59bb578d-b312-442a-858b-1a1a54b18a6c.filesusr.com/ugd/c79b1c_1765e5adb7c746deb0258dfd7c7315f0.pdf?index=true
- https://s3.amazonaws.com/gonasidupij/79525987811.pdf
- http://konemuga.epizy.com/21112124891.pdf
- https://uploads.strikinglycdn.com/files/4b7f291d-faf2-4195-b5db-fbae779a14bc/xuwibidemedegojobobiguwe.pdf
- https://s3.amazonaws.com/jenagubadopi/duputa.pdf
- https://uploads.strikinglycdn.com/files/5a6b0b79-2d7e-431e-909f-ad027a4366ff/56821656630.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://scripts.sil.org/OFL
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000de4c.binf2350e429021e4e7c2464606c4c55c1c5b66c2c9eab644df7acaa61b6824a5ba |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE4C | 5176 bytes |
font_01_sfnt_off0000f003.bin6894c2fa3bbeb4a10590cd1d9f97601ee9ce57a3b92df78dd0e8dc35bfa9bf16 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF003 | 11040 bytes |
font_02_sfnt_off00011581.bina542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11581 | 4324 bytes |
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