MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The sample is a PDF document that contains numerous external URLs, many of which are hosted on disposable domains or are part of a link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the presence of external links and the nature of the heuristics point towards the document being used to redirect users to malicious sites, potentially exploiting vulnerabilities or delivering further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 6
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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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LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMANDExtracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
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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://druttle.ru/strik?utm_term=factoring+trinomials+practice+worksheet+pdf PDF link annotation
- http://perinolaguzur.iblogger.org/61368375500.pdfIn PDF document text
- http://cuzinfo.ru/13572288215iwg5q.pdfIn PDF document text
- http://pifemukopisare.sportsontheweb.net/92654550744.pdfIn PDF document text
- http://niludop.22web.org/where_to_refill_power_steering_fluid.pdfIn PDF document text
- http://fonudesuwobulud.mygamesonline.org/jazetexi.pdfIn PDF document text
- http://tamakedesununod.mywebcommunity.org/second_industrial_revolution_worksheet.pdfIn PDF document text
- http://hookup750.website/33440426001vj0iz.pdfIn PDF document text
- https://s3.amazonawsIn macro / runtime command snippet
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/a5d669df-14b4-43aa-ba7c-8884a5db94bf/54647755379.pdfIn PDF document text
- https://s3.amazonaws.com/perurulexi/bully_anniversary_edition_mod_apk_lite.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5a7b317d-114b-4952-8a6c-d9752e31d9d1/rufoloxapakukasivojine.pdfIn PDF document text
- http://wojenubenizega.epizy.com/basic_english_language_rules.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/267d8bbe-474d-4a0a-9300-36c7fe798aec/lukukovemonufalonatusof.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c5938ebe-f889-4876-84a1-bf72a0ddf307/curl_of_gradient_of_vector_function.pdfIn PDF document text
- https://s3.amazonaws.com/jalasilunaz/82311652316.pdfIn PDF document text
- http://nukivamo.myartsonline.com/fopavewuwa.pdfIn macro / runtime command snippet
- https://s3.amazonaws.com/satudifin/enable_grouping_in_protected_sheet_excel_2010.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/95dd0aff-f45f-44d8-a4ac-8ad05ff32878/what_makes_an_effective_principal.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/29f3dc74-a8a2-4b1a-9a47-3dbbe7d27263/what_setting_should_i_have_my_storage_heater_on.pdfIn PDF document text
- http://devonefon.epizy.com/how_much_are_criminal_lawyers.pdfIn PDF document text
- https://s3.amazonaws.com/sigobija/kedigeditibefotigipa.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d22e8eb3-4196-4a9a-b966-e83571aac3fb/gidenogemimu.pdfIn PDF document text
- https://s3.amazonaws.com/fotepopunaj/7757021756.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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0001355e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1355E | 5680 bytes |
SHA-256: f5a87139dc13afe0e48fb0b5173afa586da58b75cad3eac629bc4c18eeee45f1 |
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font_01_sfnt_off0001489e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1489E | 12244 bytes |
SHA-256: cce575a5a314546fb4d4214ba83ccea95d1843a1edfd2dcdac286f6c93880b60 |
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