MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external links, many pointing to compromised WordPress uploads or disposable hosting, suggesting a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded JavaScript likely serves to download and execute a second-stage payload from one of the provided URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
Heuristics 8
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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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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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=doctor+driving+hack+game
- https://www.psk.com.au/application/third_party/ckfinder/userfiles/files/zuwaz.pdf
- http://ambulatorioveterinarioscapindandrea.it/userfiles/files/jukisobuwizizaget.pdf
- http://dspec-car.com/js/upload/files/85144298879.pdf
- http://www.trisad.kz/ckfinder/userfiles/files/narapuvazugazinizexezef.pdf
- https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/b44ae285f9d899c77e8908ca51cafa7f/rikekisaketumuxix.pdf
- http://nathulaldasptti.com/ckeditor/ckfinder/userfiles/files/31320040499.pdf
- http://sushi-belovo.ru/files/gevubutek.pdf
- https://studiovizia.com/webroot/img/content/files/75725370958.pdf
- https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fc630986ae---lazerevase.pdf
- http://pharmorgsyn.com/upload/files/lemejija.pdf
- http://fundacionecla.org/resources/original/file/totetivizufopibidu.pdf
- http://mesterteto.hu/userfiles/file/tatumerovuda.pdf
- http://arsvet.ru/img/upload/55830998421.pdf
- http://kondicionery-ivanteevka.ru/upload_picture/file/wapikigoraf.pdf
- http://live-lessons.net/lcj/web/uploads/assets/file/94488769839.pdf
- http://seanmore.com/userData/board/file/70471123600.pdf
- http://hengtongrongshang.com/jingkelun/userfiles/files/20210912105809.pdf
- https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/951fe95d7c621e36aac3ff8de6cd8632/suwozubunasitasevedubepeb.pdf
- https://presstone.hu/userfiles/file/kunudekezufirutane.pdf
- https://worldmedglobal.com/userfiles/files/56306447137.pdf
- https://extremedriveline.com/ckfinder/userfiles/files/23854629209.pdf
- http://korealabels.com/ckfinder/userfiles/files/21837531244.pdf
- http://pizzeriagiganti.ro/imagini_ws/babepokez.pdf
- http://xn--pr3b03lcdvwu9dpynqkc.com/DATA/file/20210913065605.pdf
- http://iccjsc.vn/images/uploads/files/60837192225.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b005.bind917b6b3af553d3b75851317e9f921da82762adfcd01ffa31f41aec6b81bcf77 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB005 | 10760 bytes |
font_01_sfnt_off0000c85d.bind8653d31207c1a957399290640142b9641c425433ee971743676bc22c2621a8c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC85D | 14532 bytes |
font_02_sfnt_off0000ec88.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC88 | 16792 bytes |
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