MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 User Execution: Malicious File
The sample is a PDF document flagged by ClamAV as a phishing trojan. Heuristics indicate embedded JavaScript and a social engineering lure to install a browser extension or update. The document body is heavily obfuscated, but the presence of embedded JavaScript and numerous external URLs suggests an attempt to download and execute further malicious content or redirect the user to a phishing site.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 7
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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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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://pistant.ru/uplcv?utm_term=chrome+android+save+page PDF link annotation
- http://educaholistica.com/resources/img/imagesck/files/nepetedekexoj.pdfIn PDF document text
- http://dolphinkorea.com/files/files/32568159579.pdfIn PDF document text
- http://www.ramseier-appenzell.ch/elrada/js/ckfinder/userfiles/files/42426972294.pdfIn PDF document text
- https://pnlcoach.com/misc2/file/In PDF document text
- https://hnhaa.com/userfiles/tnejp/files/87233465739.pdfIn PDF document text
- https://ijfbacknumber.com/editor_up/28201199812.pdfIn PDF document text
- http://xn--oy2b19v1mb1yi.com/userfiles/file/besipa.pdfIn PDF document text
- http://villkasz.hu/editor_up/63247634911.pdfIn PDF document text
- http://eventologia.com/userfiles/files/20302716576.pdfIn PDF document text
- http://seyrimerdin.com/userfiles/file/66880660550.pdfIn PDF document text
- http://xn--2-140-swe8h.xn--p1ai/files/ramibixaxepewutetawu.pdfIn PDF document text
- https://thefertilizerequipment.com/d/files/muxodazexorasomoze.pdfIn PDF document text
- http://sicilyontable.it/userfiles/files/58886530422.pdfIn PDF document text
- http://stphilomenaonline.org/userfiles/file/1355528724.pdfIn PDF document text
- https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/93eba9e7fe412a4c35c3d62a17f28fcd/84486336130.pdfIn PDF document text
- http://hyundainhapkhau.net/upload/files/taxogupuroni.pdfIn PDF document text
- http://chickendaylacrescenta.com/uploads/files/27558597787.pdfIn PDF document text
- https://traiteur-troyes-mariage-buffet-aube-10.blaisot-traiteur.fr/ckfinder/userfiles/files/zojexozagopi.pdfIn PDF document text
- http://ecovn.vn/uploads/news_file/rizefasawiwede.pdfIn PDF document text
- http://boston.pl/fck_pliki/file/noguxazesalevesedanerur.pdfIn PDF document text
- http://christschoolblr.in/userfiles/file/pozolo.pdfIn PDF document text
- https://stephankeppel.com/userfiles/file/85756604412.pdfIn PDF document text
- http://vivaibonomo.it/userfiles/files/faralo.pdfIn PDF document text
- https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/9b130073cdc25f13dffbebed72efd22a/xazixeveti.pdfIn PDF document text
- https://avenue102.com/uploads/file/81798965242.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://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_off0000cbdd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCBDD | 18464 bytes |
SHA-256: 7f60bca743a485504bc061d63d67d392c664c4b5087d38aacc06e924f8ddd27f |
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font_01_sfnt_off0000fb85.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB85 | 10792 bytes |
SHA-256: 9f1b1a5967c2929abad757e8ac5f57b7d0ec8751a964305c30bf90a940e0906d |
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font_02_sfnt_off00011403.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11403 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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