MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript and numerous links to external URLs, many of which are algorithmically generated and hosted on disposable domains. This strongly suggests a phishing or malware distribution campaign, where the PDF acts as a lure to redirect users to malicious sites. The ML classifier and ClamAV detection further support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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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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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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://inwebjor.ru/uplcv?utm_term=wps+apk+english+version PDF link annotation
- https://bloomland.com/sites/bloomland.com/files/mifegilunevujenaxunip.pdfIn PDF document text
- http://budaors.varosom.hu/userfiles/files/taniji.pdfIn PDF document text
- http://universalthailand.com/images/uploads/ckfinder/files/96706224735.pdfIn PDF document text
- https://alexandrapanayotou.com/web/images/static/file/31935268800.pdfIn PDF document text
- https://allmassage.net/upload/file/20210901165235.pdfIn PDF document text
- https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/3abebfb8ed6a5276061ae3b68a78ee3b/bujotuxemikorupunixisuge.pdfIn PDF document text
- http://rigassprotes.lv/uploadz/file/52806267022.pdfIn PDF document text
- http://epoxidice.ro/mm/file/fewulitowelexolinuxulibi.pdfIn PDF document text
- http://abwessex.com/uploads/files/68048526932.pdfIn PDF document text
- https://dreptultau.hotnews.md/upload/userfiles/files/zogobapoj.pdfIn PDF document text
- https://www.carnesvarejo.com.br/assets/ckfinder/core/connector/php/uploads/files/nudinusop.pdfIn PDF document text
- http://pronobile.com/catalog/file/sofetubafebebojevomubusu.pdfIn PDF document text
- http://csptech.net/admin/userfiles/file/43942553075.pdfIn PDF document text
- https://mmeasar.com/mmeasarfiles/file/41624477651.pdfIn PDF document text
- http://gelateriacool.it/userfiles/files/widigetede.pdfIn PDF document text
- https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/16131af063d942---vozawugupitumu.pdfIn PDF document text
- http://autosvanbeek.nl/mindcms/js/ckf/userfiles/files/23573048153.pdfIn PDF document text
- http://sevinctekstil.com/resimler/files/39285267235.pdfIn PDF document text
- http://rnralpha.cz/res/file/jugeguborami.pdfIn PDF document text
- https://ka-base.no/images_content/file/xuwowu.pdfIn PDF document text
- http://jinruily.com/UploadFile/file/20210914184843410.pdfIn PDF document text
- https://nezrenweb.com/calisma2/files/uploads/731976919.pdfIn PDF document text
- http://veterinarioassociatopacinidallatorre.eu/userfiles/files/29197530812.pdfIn PDF document text
- http://www.farmaciapenil.es/userfiles/files/10547439036.pdfIn PDF document text
- http://studiomedicoveterinariobellucci.eu/userfiles/files/kugeroteba.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_off0000b2e5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB2E5 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cafc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCAFC | 10584 bytes |
SHA-256: 9aa65884393dac301c60bd69c272934d14288304fb1f5b305d3689d512b97051 |
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font_02_sfnt_off0000e31b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE31B | 17696 bytes |
SHA-256: 18f562240397fd82160e7e65e982504de44cf0afbb620c4f0056c10e4bb3b02e |
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