MALICIOUS
206
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF document exhibits characteristics of a callback phishing or tech-support scam, as indicated by the 'SE_CALLBACK_LURE' heuristic. It contains numerous external links, many pointing to disposable hosting, suggesting a link farm designed to obscure the ultimate destination or host malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
Heuristics 7
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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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://jacksth.ru/strik?utm_term=what+to+the+slave+is+the+fourth+of+july+commonlit+quizlet
- https://cdn-cms.f-static.net/uploads/4501660/normal_601b313565359.pdf
- https://wanomumopanud.weebly.com/uploads/1/3/1/3/131379193/2543337.pdf
- https://static.s123-cdn-static.com/uploads/4404523/normal_5fce8b371600c.pdf
- https://zijolafazul.weebly.com/uploads/1/3/0/8/130873795/vamupigadabimoxupema.pdf
- https://static.s123-cdn-static.com/uploads/4369329/normal_5ff25c1339718.pdf
- https://sefomaxezaniv.weebly.com/uploads/1/3/1/4/131483109/9441650.pdf
- https://cdn-cms.f-static.net/uploads/4491933/normal_5fd11a37a4c5a.pdf
- https://tapajiwegunet.weebly.com/uploads/1/3/1/3/131380495/siwuker.pdf
- https://cdn-cms.f-static.net/uploads/4371788/normal_600fa9d917f26.pdf
- https://nolipugi.weebly.com/uploads/1/3/4/6/134652161/1627797.pdf
- https://cdn-cms.f-static.net/uploads/4385424/normal_602b3b9622707.pdf
- http://kolejuf.iblogger.org/filis.pdf
- https://cdn-cms.f-static.net/uploads/4371543/normal_60418c29e5ff1.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://1423d76f-a56f-4481-bf87-726e17039346.filesusr.com/ugd/14aee2_51d334b9552442bca8211acec6511636.pdf?index=true
- https://1ceef7f3-d523-4f80-a0a4-3aed54d3d17a.filesusr.com/ugd/48841a_dac13e927caf421caa0a85ea5c8bdf60.pdf?index=true
- https://35e1cc1d-5f6c-4a41-9b1b-b9ae8dddc97a.filesusr.com/ugd/351eee_8281582249b24e9194ae48462e3964a5.pdf?index=true
- https://48cc712b-de5e-493e-a198-f8962849e22b.filesusr.com/ugd/d2751c_10fb7faabbde43f897078e174da1963c.pdf?index=true
- https://s3.amazonaws.com/sizabo/tennessee_williams_a_streetcar_named_desire_characters.pdf
- https://s3.amazonaws.com/wolina/pretest_emergency_medicine_free_download.pdf
- https://40ba1f7a-6e91-49bb-bbb8-dfbb40a2bc60.filesusr.com/ugd/22bf55_6d6aacb71bb2421198246ec42e8c3207.pdf?index=true
- https://s3.amazonaws.com/bidivo/55375912921.pdf
- https://s3.amazonaws.com/rakabexozu/b._ed_exam_form_online.pdf
- http://xewowibaxe.rf.gd/ar-15_upper_receiver_proof_marks.pdf
- https://s3.amazonaws.com/werowibovezoje/navy_seal_requirements.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
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000fa4a.bin13b8e6b77c23f4a64954f4275367faab2d67c05e0366765f8b692133b1bb53ad |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA4A | 5548 bytes |
font_01_sfnt_off00010d29.bin78ad58fbdd0dd17194b4fe37a2f1286830229d33d3ee5e0a8badf85f2a5670b0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D29 | 11696 bytes |
font_02_sfnt_off00013537.bin9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13537 | 16092 bytes |
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