MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and multiple external links, with several heuristics indicating malicious intent, including PDF_RANDOM_URL_LINK and ML_NYX_PDF_MALICIOUS. The embedded JavaScript likely facilitates the redirection or execution of further malicious content. The numerous external links, many hosted on disposable domains, suggest a phishing or malware distribution campaign.
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=mht+cet+previous+year+question+papers+with+answers+pdf PDF link annotation
- https://immsac.pe/sgi_userfiles/userfiles/files/lumanavetenazeged.pdfIn PDF document text
- https://hizlipin.com/calisma2/files/uploads/6927211831.pdfIn PDF document text
- http://hud101.vn/webroot/img/posts/files/62238754882.pdfIn PDF document text
- http://vector-mebel.ru/uploads/files/75489705413.pdfIn PDF document text
- http://baigeleather.com/userfiles/file/dewis.pdfIn PDF document text
- https://asiapharma.la/files/files/44889629280.pdfIn PDF document text
- http://runo34.ru/attachments/file/dujipajazimarebisinikuba.pdfIn PDF document text
- http://ylplj.com/ckfinder/userfiles/files/tafefuzanukixixelogiberir.pdfIn PDF document text
- http://lactopad.com/uploads/files/20200125881.pdfIn PDF document text
- https://www.terraton.com.my/ckfinder/userfiles/files/12195942004.pdfIn PDF document text
- http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1614b28311d571---fuviwi.pdfIn PDF document text
- http://studiomedicoveterinariobellucci.eu/userfiles/files/saxasefosupopalamoxugota.pdfIn PDF document text
- https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c3b4ab1856---badanevidapuzusitok.pdfIn PDF document text
- https://www.southdownscellars.co.uk/ckfinder/userfiles/files/30569999744.pdfIn PDF document text
- http://geoodwierty.pl/files/file/56312967278.pdfIn PDF document text
- http://www.eurosecurimed.com/ckfinder/userfiles/files/matonej.pdfIn PDF document text
- http://escuelasfutbol8.com/docs/files/87107611311.pdfIn PDF document text
- http://factblogs.com/uploaded_files/userfiles/files/nelujafap.pdfIn PDF document text
- https://luminex.pl/upload/file/19455439939.pdfIn PDF document text
- http://philboyd.com/lutetawufozizugogume.pdfIn PDF document text
- https://mallenmediations.com/mallenmediations/images/userfiles/file/wubisadetusu.pdfIn PDF document text
- https://groupunsur3.com/contents/files/sozigadamezidudavedupa.pdfIn PDF document text
- https://khonggiansangtao.com/platformecom/img/upload/file/nefufufegilamaparefavimal.pdfIn PDF document text
- https://s3mail.tenten.vn/js/ckfinder/userfiles/files/logudifuvapes.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_off0000ea99.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA99 | 19340 bytes |
SHA-256: 80d8342dae0791ea29cdb2fa1545515671abbc1277cedc79129f6e0a0a2598fc |
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font_01_sfnt_off00011ce6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11CE6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000134fd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x134FD | 11176 bytes |
SHA-256: 6a912d2175a810def1491f8c377e96c8d12d46b6b23e9165a7ec8fa859f08024 |
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