MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous external links, with several heuristics indicating it functions as a link farm. Some of these links point to compromised CMS upload directories, suggesting a potential phishing or malware distribution vector. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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://archism.ru/uplcv?utm_term=organic+chemistry+exam+pdf PDF link annotation
- https://jakspravnenapsa.cz/userfiles/file/55258314851.pdfIn PDF document text
- http://theeultimatenetworker.com/ckfinder/userfiles/files/torazodokezawevukab.pdfIn PDF document text
- http://www.fashiongale.ro/userfiles/files/20877834478.pdfIn PDF document text
- https://dom4m.by/userfiles/files/xadedojazatokomazuxe.pdfIn PDF document text
- http://tylincms.com/userfiles/files/binipomofanuresizuganakak.pdfIn PDF document text
- https://bulgariapools.com/contents/files/dokudefunubusukadilabage.pdfIn PDF document text
- https://takipbizde.com/calisma2/files/uploads/67867933781.pdfIn PDF document text
- http://katyababash.com/images/uploads/file/migonusik.pdfIn PDF document text
- http://ttccid.com/userfiles/file/34066966783.pdfIn PDF document text
- http://amghanoi.com/images/ckeditor/files/33653166381.pdfIn PDF document text
- https://eminentland.com/admin/userfiles/files/58535551310.pdfIn PDF document text
- http://stringquartet.biz/web/images/fck/file/masexodubunomoxobelut.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135f72fdcfb7---renijetanivegukisomog.pdfIn PDF document text
- http://minerva-collection.net/files/files/30107342509.pdfIn PDF document text
- https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ecf7c8b37c---vokefewegobal.pdfIn PDF document text
- https://5of7edwardstreet.com/assets/media/files/33585785928.pdfIn PDF document text
- http://security-m.jp/tool/images/file/9066367120.pdfIn PDF document text
- http://ty-universe.com/image/files/20210901_150556.pdfIn PDF document text
- http://vanxuantravel.com/upload/files/45658374336.pdfIn PDF document text
- http://poongdung.com/FileData/ckfinder/files/20210903_AA93674AF311C4D8.pdfIn PDF document text
- http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1613a7ab7d7b9c---golukovidat.pdfIn PDF document text
- http://dulichtantai.com/files/uploaded/files/dejunegozorifesipupoxutod.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_off0000dad7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDAD7 | 16956 bytes |
SHA-256: 4c3ec214cc96dc32626c09f4a04291aeed24dd4af176533acd6e0ddbfeaa58d3 |
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font_01_sfnt_off00010709.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10709 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011f20.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F20 | 11140 bytes |
SHA-256: 068afe166d2f8ba792950df272af1920a7d6d9635402f9409fd8103caed14b8f |
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