MALICIOUS
276
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links to external resources, many hosted on compromised or disposable domains, suggesting a phishing or malware distribution attempt. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document actively tries to trick the user into installing something, likely a malicious browser extension or update. The ML classifier and ClamAV detection further confirm its malicious nature, with the latter identifying it as 'Pdf.Phishing.Trojan'. No scripts were extracted, but the overall pattern points to a social engineering attack leveraging external URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
Heuristics 9
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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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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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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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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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://drafthe.ru/uplcv?utm_term=chrome+home+android PDF link annotation
- http://synphabase.ch/upload/file/tevusezafi.pdfIn PDF document text
- https://superiorservicesandsolutionsfl.com/nbloom/fckuploads/file/27847061505.pdfIn PDF document text
- https://baglab.pl/galeria/file/7245310051.pdfIn PDF document text
- http://kolaykanal.com/userfiles/files/63060126556.pdfIn PDF document text
- http://website-design-company.in/dev3/damodar/ckfinder/core/connector/php/userfiles/files/44352855124.pdfIn PDF document text
- http://petra-koparki.pl/Upload/file/8874743861.pdfIn PDF document text
- http://charmingcurls.se/upload/file/77665318098.pdfIn PDF document text
- http://constantemails.com/userfiles/file/1631457437zanetatusulezat.pdfIn PDF document text
- http://fireprovietnam.net/luutru/files/36234007764.pdfIn macro / runtime command snippet
- http://najlepsietorty.sk/uploads/fck/file/14367657684.pdfIn macro / runtime command snippet
- http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e573675ace---sanekepunusejupexexiwuwid.pdfIn PDF document text
- http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16134fececa044---30773306414.pdfIn PDF document text
- http://prvugkh.ru/uploads/files/kinavopupezi.pdfIn PDF document text
- http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/a7e6b70c23a3ee48579640de3bb4ab21/50354605959.pdfIn PDF document text
- https://toscanafantastica.com/userfiles/file/rutodurujefumarepusudime.pdfIn PDF document text
- http://avtosfera28.ru/userfiles/file/rufadole.pdfIn PDF document text
- https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/k489nfhpp7kjc9qave5nc7tnph/malukegonilimenonikotejel.pdfIn PDF document text
- http://0851gay.org/userfiles/202109file/2021091417363370554.pdfIn PDF document text
- https://altaamir.ipixpms.com/Rapport/public/assets/ckfinder/userfiles/files/siweberuwutufudu.pdfIn PDF document text
- http://bijverhoeven.nl/uploads/files/52031245469.pdfIn PDF document text
- http://damutech.kz/upload/2021/09files/210901131009087835v65de.pdfIn PDF document text
- https://vannordenvastgoed.nl/userfiles/file/retunagatuxi.pdfIn PDF document text
- http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/23c2866572f19fa75dde92c76308eff8/58327228341.pdfIn PDF document text
- http://www.brickchamber.com/ckfinder/userfiles/files/8602682488.pdfIn PDF document text
- http://veterky.ru/ckfinder/userfiles/files/wegopazagusaposekaluz.pdfIn PDF document text
- http://yaqeen-eg.com/userfiles/file/74213153697.pdfIn PDF document text
- http://constantemails.cIn macro / runtime command snippet
- 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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f571.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF571 | 10232 bytes |
SHA-256: 3a13f75c397ab5e0c51a9239c1d837b04bc1ceb9e14bc02815631c466c704613 |
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font_01_sfnt_off00010c2f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C2F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012441.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12441 | 17960 bytes |
SHA-256: 08841de7f47ab30361a0cf13b85ccb2766f8f30754831ba3d262ff74975fa6c2 |
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