MALICIOUS
324
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 User Execution: Malicious File
T1059.007 JavaScript
The PDF contains multiple embedded URLs, with one specifically linking to a known malicious redirector. Heuristics indicate the document attempts to lure users into installing browser extensions or updates, and also suggests copying/pasting content into a shell, indicating a social engineering attack. The ML classifier and ClamAV detection strongly support a malicious classification, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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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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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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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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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://crophysi.ru/123?utm_term=brave+browser+android+chrome+extensions In PDF document text
- http://rijalebegag.iblogger.org/xenesuz.pdfIn PDF document text
- http://bigmagazin.xyz/janaxakuritogulazolizerat3cg03.pdfIn PDF document text
- http://tiktoktop.design/86678342548kgdd5.pdfIn PDF document text
- http://otomail.business/udp_glotorrents._pw_6969_announlybj8.pdfIn PDF document text
- http://tipografiyav.moscow/inner_planets_3d_modelhi6zx.pdfIn PDF document text
- http://shopeuro.pro/rezon7665u.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/d915514c-029c-4f0c-ba09-7dcd3a2b71c0/what_does_a_prosecution_solicitor_do.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b37e8cc4-c704-41a7-a589-68fa4ba1c01c/pippi_longstocking_plot_summary.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ff8cae30-f8d3-48cd-947a-e826b9a53c6b/77721367513.pdfIn PDF document text
- https://f1cb2ec4-a82d-4768-8a06-5236a2db220e.filesusr.com/ugd/a2e20a_71741e9f2d9a43a2a6fb55e6ba40692d.pdf?index=trueIn PDF document text
- http://kifavorufodib.rf.gd/jisudolixelukumujonuvuro.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cb1a46c9-8c6e-4607-9365-47d326bcd11a/how_to_update_swann_security_system.pdfIn PDF document text
- http://lazunebenak.epizy.com/storm_kings_thunder_free.pdfIn PDF document text
- http://vogafaxusa.epizy.com/73609523214.pdfIn PDF document text
- http://wiwazisumi.rf.gd/vovudotafomatalipo.pdfIn PDF document text
- https://d3df31c7-72fe-42b1-a92e-0723e8ed7a16.filesusr.com/ugd/5bf82b_7ee3cfa3dd9c400086522afb08055222.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/2bf0fe4f-49c2-4f03-9a21-649718232cc9/best_kitchenaid_food_mixer.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_off0000e922.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE922 | 5556 bytes |
SHA-256: d11a1f4fa6bdd9a1ff62260b9b958886f501082c8069b162cbeb5427e56c5317 |
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font_01_sfnt_off0000fbef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBEF | 10372 bytes |
SHA-256: ecab52b8f2a43ef608b4865cfe7ee7d30a604d9591efa8d7683032c40ecf307f |
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