MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript which is used to redirect the user to a series of external URLs. These URLs appear to be part of a link farm designed to host further malicious PDFs, as indicated by the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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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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://smidgel.ru/uplcv?utm_term=until+the+end+of+time+2pac+lyrics PDF link annotation
- http://massimosusto.eu/userfiles/files/54050816453.pdfIn PDF document text
- https://fac.apuntoweb.com/userfiles/files/nogoboluzaletetomepume.pdfIn PDF document text
- http://lica.plovdivweek.com/js/ckfinder/userfiles/files/muxejazotupatunix.pdfIn PDF document text
- http://falconartistmanagement.com/ckfinder/userfiles/files/sovuxejuvokimitur.pdfIn PDF document text
- http://janaturismointegrato.com/uploads/file/fotazikexal.pdfIn PDF document text
- http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137b4d543013---rebivofibenug.pdfIn PDF document text
- http://musclecar-taps.com/js/upload/files/7284201441.pdfIn PDF document text
- http://laser-piskovani.cz/democms/userfiles/file/38903345047.pdfIn PDF document text
- http://carraracucinecomponibilitrapani.it/userfiles/files/simixo.pdfIn PDF document text
- https://hoatuoi360.vn/uploads/files/sebejojekumiliwutige.pdfIn PDF document text
- http://3gr-group.com/ci/userfiles/files/76943627769.pdfIn PDF document text
- http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1615b21acb9c1b---fatelozaguwetureb.pdfIn PDF document text
- https://dennismaloney.ca/upload/editor/file/fusifigalojifeku.pdfIn PDF document text
- http://namthangbasaltstone.com/uploads/image/files/divijegida.pdfIn PDF document text
- http://na3.it/misc/file/gasilugalimuzuf.pdfIn PDF document text
- http://novehorizonty.sk/userfiles/file/kipasudominefimudifuj.pdfIn PDF document text
- https://weilmclainboiler.ca/fck_upload/file/vasekeziluser.pdfIn PDF document text
- http://yuqiaohome.com/uploads/files/202109102328508015.pdfIn PDF document text
- http://quiltingacademy.info/fckeditor/userfiles/file/86903427518.pdfIn PDF document text
- http://champagne-marc-chauvet.com/images/files/vozutoteb.pdfIn PDF document text
- http://rpsbchamber.org/editorData/file/totifiju.pdfIn PDF document text
- http://1855-4080.com/userfiles/file/53630530257.pdfIn PDF document text
- http://avesta-hmora.boj.se/uploads/userfiles/files/54292848174.pdfIn PDF document text
- https://adamant54.ru/userfiles/files/vatuzesenejan.pdfIn PDF document text
- http://packamate.com/userfiles/90191460587.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_off0000ba66.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBA66 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d278.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD278 | 16420 bytes |
SHA-256: 22db130e89c8cb7a83df1f288e5714d9f638687f09ada98e854d2bb2b037ebe3 |
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font_02_sfnt_off0000fc75.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC75 | 11128 bytes |
SHA-256: 386a5055c1fe425c03d5cce16e7b7fea70c677eb16e4d32c6938817fce26c0bb |
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