MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs, many of which point to compromised CMS upload storage or are part of a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the structure suggests a malicious link distribution mechanism.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
Heuristics 6
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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 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://queure.ru/uplcv?utm_term=download+the+big+book PDF link annotation
- https://peintures-descours.fr/fichier/files/39532553951.pdfIn PDF document text
- http://giorgimpianti.com/userfiles/file/54168472818.pdfIn PDF document text
- http://quangcongluc.com/upload/files/siberugogibu.pdfIn PDF document text
- https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/ps9c848lm06ahpefe6c4iamoel/71410481889.pdfIn PDF document text
- https://harom.ro/files/file/ribis.pdfIn PDF document text
- http://mybyblos.com/userfiles/file/52924971836.pdfIn PDF document text
- http://stickerbarcode.com/file_media/file_image/file/larudubipemubuxut.pdfIn PDF document text
- http://finara-v.com/file_media/file_image/file/xerasukabuvevejetezeg.pdfIn PDF document text
- https://mimpishio2.com/contents/files/10836762051.pdfIn PDF document text
- http://jungam21.com/upfiles/file/1630986939.pdfIn PDF document text
- http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139866b8a526---64143875667.pdfIn PDF document text
- http://e-sheremet.com/img/16014963170.pdfIn PDF document text
- http://ecohort.com/userfiles/files/88003429709.pdfIn PDF document text
- http://dongzzang.com/userfiles/file///70215802739.pdfIn PDF document text
- https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/72d681d71b33e6773c13f9823f616fec/ziloxomavafusatexi.pdfIn PDF document text
- https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/f9209406ca0848f2ad17ddcb81dce5ff/95483793916.pdfIn PDF document text
- http://adec-interiors.net/Uploads/file/sanexuwidorivenujezidux.pdfIn PDF document text
- http://hamyarsanatco.com/ckfinder/userfiles/files/gotexebumo.pdfIn PDF document text
- http://naoshima-habitant.com/images/blog/file/lezonowududitofulu.pdfIn PDF document text
- https://cuatudongsaigon.vn/uploads/files/duzenekiloka.pdfIn PDF document text
- https://aquamedicasatumare.ro/ckfinder/userfiles/files/25407642179.pdfIn PDF document text
- http://laboratoriologos.it/userfiles/files/31763506609.pdfIn PDF document text
- https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1613365a538975---38659584211.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_off0000d71b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD71B | 18924 bytes |
SHA-256: 66368f7e2ae5d77c14b3d1047e41010e253f381425cd7b9f245ae117b3852e02 |
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font_01_sfnt_off0001077f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1077F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011f96.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F96 | 10580 bytes |
SHA-256: 91ced44b65f6e6376ad21f6a87ee1fa2e9ee3128a82f5b2c2ded50eddb51e358 |
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