MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs pointing to compromised or disposable domains, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. The heuristic firings confirm the presence of a link farm on potentially untrusted hosting, suggesting a lure to external malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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 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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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=classroom+timer+fun+timers PDF link annotation
- http://siamsnail.com/media/userfiles/files/63839619371.pdfIn PDF document text
- http://zoekidsworld.com/userfiles/file/narilibuv.pdfIn PDF document text
- http://winkeleninzundert.nl/uploadimages/files/kuvesimuwelodonebusojite.pdfIn PDF document text
- http://www.thunderesp.com/ckfinder/ckfinder.htmlfiles/18504243925.pdfIn PDF document text
- http://aptekarynek.pl/zdjecia/fck/file/pedibuxilatarokodutisowuk.pdfIn PDF document text
- http://sissonne.hu/editor_up/40298360660.pdfIn PDF document text
- http://kpotplace.com/uploads/files/65823541208.pdfIn PDF document text
- https://lifeteacher.tw/uploads/files/202109031157539362.pdfIn PDF document text
- https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/tst7lnonpr3sigck2pf5fk946q/56948349346.pdfIn PDF document text
- http://kasintorn.com/images/upload/files/jeroderosukupewof.pdfIn PDF document text
- http://managhantasala.net/mailuserfiles/file/noxokabufejutalovuret.pdfIn PDF document text
- https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/5015583592f4a5a006b72ad4e453b9ff/fejojuwetew.pdfIn PDF document text
- http://ansonseatery.com/uploads/files/xuzewirapim.pdfIn PDF document text
- http://dd-eng.com/files/files/vagupekewuguroji.pdfIn PDF document text
- https://iasvn.org/Images_upload/files/31658708276.pdfIn PDF document text
- http://saga.diamonds/uploads/ckfinder/files/96554785066.pdfIn PDF document text
- https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/161397ac298297---86781525809.pdfIn PDF document text
- https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/1612e9f21b8670---96374771859.pdfIn PDF document text
- http://evolutionchonburi.com/userfiles/files/10944233628.pdfIn PDF document text
- https://kar360.com/resimler/files/zodegeden.pdfIn PDF document text
- https://nepalonetours.com/userfiles/files/pajerovupewezoxilel.pdfIn PDF document text
- http://xn--80aap0abfiql8h.xn--p1ai/admin/ckfinder/userfiles/files/puwujenagaguzud.pdfIn PDF document text
- http://gma.ge/admin/ckeditor/ckfinder/userfiles/files/bujowimubulokiwuwadufo.pdfIn PDF document text
- https://reviewz.eu/app/webroot/files/userfiles/files/82295364327.pdfIn PDF document text
- https://atasuorganiktarim.com/upload/ckfinder/files/64357967021.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_off0000b47c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB47C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cc8e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCC8E | 15592 bytes |
SHA-256: 74f11f77656e2a97736ca15197aef0c19eb0072e26cf03c63259cb0ffe28785c |
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font_02_sfnt_off0000f460.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF460 | 10504 bytes |
SHA-256: db6ff33bc27c873611ee5ab2c2afed4d4a87edd620536d07959f683686a5fa75 |
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