MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains multiple external links, with one identified as a random URL link and another as part of a link farm on disposable hosting, indicating a phishing or redirection attempt. ClamAV detection and ML classification strongly suggest malicious intent. The presence of embedded URLs and the overall structure point towards a phishing attack, likely using spearphishing attachment as the initial access vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
Heuristics 6
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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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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://oniceh.ru/uplcv?utm_term=urticaria+bee+sting PDF link annotation
- https://fobh.net/userfiles/files/bewitusabewoj.pdfIn PDF document text
- http://gorsilawfirm.com/userfiles/file/towasuzojukorodiwatobe.pdfIn PDF document text
- https://cantellodetersiviprofessionali.it/uploads/file/nijajededuletalage.pdfIn PDF document text
- http://imhome-listings.com/userfiles/files/33893888046.pdfIn PDF document text
- https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/5nhkjm3ce4eprfcd2s00b72rqt/lokixugurobuzedopu.pdfIn PDF document text
- http://le-lemniscus-incandescent.fr/ckeditor/upload/files/28235581768.pdfIn PDF document text
- https://anctools.com/ckfinder/userfiles/files/65636872648.pdfIn PDF document text
- http://studioarchterreni.it/userfiles/files/vuwarekefo.pdfIn PDF document text
- http://daegyung.kr/userfiles/file/20210908034614.pdfIn PDF document text
- http://bftt.marketsearching.com/upload/files/95767004615.pdfIn PDF document text
- http://meble-tk.pl/userfiles/file/galalaredodowivab.pdfIn PDF document text
- http://enricobarraco.com/files/83858025836.pdfIn PDF document text
- http://physio-praxismitte.de/userfiles/rowakutavomukifizumo.pdfIn PDF document text
- http://www.psoealora.es/ckfinder/userfiles/files/53640105590.pdfIn PDF document text
- http://files.ibiza-ferien.de/file/40112998492.pdfIn PDF document text
- https://wolfgang-photography.com/userfiles/files/3058479230.pdfIn PDF document text
- http://c2ctrading.org/cms_upload/files/39111672668.pdfIn PDF document text
- http://onishi-kyosendo.jp/archive/zomubawoxukamobamo.pdfIn PDF document text
- https://burgas-remonti.com/userfiles/file/tonukefovevorobo.pdfIn PDF document text
- http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/620f09ce970a38f29793d5d90fab477c/40032196615.pdfIn PDF document text
- https://izr.fr/files/972399280.pdfIn PDF document text
- https://estoniapools.com/contents/files/80164649308.pdfIn PDF document text
- https://www.smartfutureexpo.com/ckfinder/userfiles/files/nofiteju.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_off0000b15f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB15F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c971.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC971 | 15224 bytes |
SHA-256: 047f3fdccf6d3df17dd2f5a37ce4105466494eb4bccc81be46f98a0b4b4a9ac8 |
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font_02_sfnt_off0000efeb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFEB | 10384 bytes |
SHA-256: f3868225a1ee074837e20c70500ff7cfc31a5adeb1ea21af5e8c1542f32b9dbb |
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