MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1059.007 JavaScript
T1566.001 Spearphishing Attachment
This PDF file contains embedded JavaScript and multiple external URIs, indicating a malicious intent to redirect users or download further payloads. The 'Fake CAPTCHA' heuristic strongly suggests a social engineering tactic to coerce user interaction. The ML classifier and ClamAV detection further confirm its malicious nature, likely as a phishing or trojan delivery mechanism.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
Heuristics 7
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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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Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHADocument displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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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://cructi.ru/uplcv?utm_term=free+insta+trial+likes PDF link annotation
- http://dr-onesrl.com/userfiles/files/32781927986.pdfIn PDF document text
- https://papiratisk.cz/soubory/ruwunimatagiwima.pdfIn PDF document text
- http://nelly-design.ru/upload/files/pubiwavuxulibigitaliwimar.pdfIn PDF document text
- https://dalnoboy.com/data/filestorage/upload/files/gotisejojakupot.pdfIn PDF document text
- https://matricula.arendic.cl/files/74513111962.pdfIn PDF document text
- https://senfina.top/uploads/files/finavubofabelajik.pdfIn PDF document text
- http://friulanamarmi.it/images/file/pikeza.pdfIn PDF document text
- http://albarossa.jp/js/upload/files/92941857361.pdfIn PDF document text
- https://chatham-ebenezer.ckdomain.com/uploads/userfiles/files/32320807001.pdfIn PDF document text
- https://biserica-izvorul-tamaduirii.ro/files/78978700100.pdfIn PDF document text
- http://aweibel.com/Photo/file/82585740356.pdfIn PDF document text
- http://renknh.com/ckupload/files/43473934171.pdfIn PDF document text
- http://aorganboys.handyfriendship.com/upload/files/21896750210.pdfIn PDF document text
- http://stickers-moins-cher.com/userfiles/stickers-moins-cher.com/file/31456845918.pdfIn PDF document text
- http://sbairs.com/datas/files/naxijokotan.pdfIn PDF document text
- http://canhtoanland.com/upload/files/61155652048.pdfIn PDF document text
- http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/16138787eb8a24---52150001329.pdfIn PDF document text
- http://nguoiquangphianam.com/uploads/files/57591408735.pdfIn PDF document text
- http://paulgraphics.paulsfashion.in/files/85365417510.pdfIn PDF document text
- http://siciny.eu/userfiles/file/59556935169.pdfIn PDF document text
- https://barcelona-health.com/files/galeria/files/30535265255.pdfIn PDF document text
- https://jlgardner.org/home/jlg/public_html/ckfinder/userfiles/files/topevepisemivitexagebo.pdfIn PDF document text
- http://lachina.cn/upload/file/15345544392.pdfIn PDF document text
- http://tentauto23.ru/ckfinder/userfiles/files/53445287778.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_off0000ce2c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCE2C | 17700 bytes |
SHA-256: fd1d0f4b1e6e1e25701f75dba690f74328747a07fee83799d022a245b81ba9a3 |
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font_01_sfnt_off0000fc0a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC0A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011421.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11421 | 10052 bytes |
SHA-256: 72f3d0bd6573ef18c226e5e6791a437c9e24c7ad1ea61e4c8ce6a6bf21b43c65 |
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