MALICIOUS
236
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains an embedded script and heuristics indicate it's a malicious payload. The document body and heuristics suggest a lure related to 'Windows powershell scripting tutorial for beginners' to trick users into executing the embedded script. This script likely downloads and executes a second-stage payload from the external URL found in the PDF.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 8
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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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Embedded script payload in PDF stream high PDF_EMBEDDED_SCRIPT_PAYLOADPDF stream bytes contain script execution markers such as ActiveXObject/CreateObject, WScript.Shell, PowerShell, or shell-exec primitives. This is stronger than ordinary PDF JavaScript because it indicates a staged external script payload hidden in stream bytes.
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Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LUREDocument tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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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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Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGEOne or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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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://seumenha.ru/strik?utm_term=windows+powershell+scripting+tutorial+for+beginners
- https://static.s123-cdn-static.com/uploads/4417129/normal_5ffb49cd5e7f2.pdf
- https://cdn-cms.f-static.net/uploads/4459794/normal_603f4a4d5078f.pdf
- http://arendaavto.taxi/you_are_strong_my_daughter_quotesyx887.pdf
- https://static.s123-cdn-static.com/uploads/4447278/normal_5fc5fef6caa05.pdf
- http://world-wildshop.com/74046971265953qr.pdf
- https://cdn-cms.f-static.net/uploads/4405179/normal_6017437dee70b.pdf
- https://cdn-cms.f-static.net/uploads/4383308/normal_5fe7d94a45c9b.pdf
- https://cdn-cms.f-static.net/uploads/4368982/normal_602dec05a774c.pdf
- https://static.s123-cdn-static.com/uploads/4459921/normal_5ffcf59222562.pdf
- http://dojixosop.iblogger.org/anemia_oms_2020.pdf
- https://cdn-cms.f-static.net/uploads/4476758/normal_6014650747098.pdf
- https://s3.amazo
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/veledabejufi/instagram_video_er_chrome_extension.pdf
- https://s3.amazonaws.com/feseni/bemba_dictionary_app.pdf
- https://d1b33a7b-cde1-45d4-bc15-d4d3b6236ac5.filesusr.com/ugd/1d64af_f14d59210a324cc98f7b78f8e8b6e5a8.pdf?index=true
- http://xijovapafibowuw.rf.gd/nunix.pdf
- https://b585a76b-fab5-4024-b0d2-f3ad95444197.filesusr.com/ugd/404203_9b7b5b03c9c749bdb2b66164d583da8b.pdf?index=true
- https://s3.amazonaws.com/golepe/14439035788.pdf
- https://dc688580-c0ec-4ade-910b-7abffd870ab4.filesusr.com/ugd/096b61_7e003308c31747bfb996a2060c6d2e79.pdf?index=true
- http://tejutixofefadi.rf.gd/what_type_of_chemical_reaction_is_so3g__h2ol__h2so4aq.pdf
- https://s3.amazonaws.com/vavale/taco_bell_power_bowl_calories_steak.pdf
- https://76c9fb28-c10e-4950-85be-37de24a2ede8.filesusr.com/ugd/fa32a6_77f2db39366e409da48ed7081df09214.pdf?index=true
- https://s3.amazonaws.com/donukadizolin/present_simple_affirmative_negative_interrogative_worksheet.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 |
|---|---|---|---|
embedded_pdf_script_000184a6.bina276879bd650975cea6f3a1d962c6e9bfeda21abd820b79625176a45892d24c2 |
pdf-embedded-script | PDF raw stream script payload at offset 0x184A6 | 1677 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 7 shell/COM execution token(s).
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font_00_sfnt_off00013d7c.bin1cb591c537f5ce9b13d8ce2af4925c67681142455e00eb0de41c796218da3e96 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13D7C | 5664 bytes |
font_01_sfnt_off000150d4.bin3c5831a749a456aa7b84e3f33636cb50a2e13a73ee7928dca5da40c3e5860e66 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x150D4 | 12308 bytes |
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