MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links, many of which point to compromised WordPress upload directories, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or delivering a secondary payload. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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://optimuselearningschool.aels.edu/learning/site/images/uploadfiles/21733533575.pdf
- http://kazuma.ru/ckfinder/userfiles/files/99831433213.pdf
- https://satnamunicipalcorporation.com/admin/ckfinder/userfiles/files/perimozitixib.pdf
- https://simpangkanan.com/contents/files/10042492977.pdf
- http://fmafirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/xixeraliwululiguriken.pdf
- https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143940eab3d5---93877092089.pdf
- https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/ovha87chddkll9k39dvigsf0h1/xivurizuxutusavatoxefefa.pdf
- http://mineraux-et-lithotherapie.fr/ckeditor/upload/files/borawonoxovolesolit.pdf
- http://rnralpha.cz/res/file/kebitoda.pdf
- https://mmtours.si/uploads/gitefedixer.pdf
- http://ckudzcssffhhj.handysociality.com/upload/files/kufokosezelor.pdf
- http://redeyeldn.com/userfiles/file/latuxo.pdf
- https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/kdv2c1kincpvjnn947p7h7lm46/89287483814.pdf
- http://sb-78.ru/files/file/jeleripevowunutesasovofux.pdf
- http://csc-0898.com/userfiles/file/20210902042022_dbtccf.pdf
- http://ruizhishengwu.com/uploadfiles/file/061259541546.pdf
- http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16146a0220a1b6---ririza.pdf
- https://www.agencesramos.com/ckfinder/userfiles/files/jafan.pdf
- http://www.rosabrockenhaus.ch/ckfinder/userfiles/files/1159834516.pdf
- http://usagimatur.com/files/others/59286438296.pdf
- http://accapierre.it/userfiles/files/sujorivizojekuwa.pdf
- http://moristas.com/userfiles/files/26606028182.pdf
- http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/161360d3418155---janopa.pdf
- http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/16130653f4d3a0---rajimosigulapafivusiv.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=he+set+the+captives+free+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_off0000d696.bin11c7a9c9cdcadccd5d07de8b41100bba9656ac56ad3393d21a1dc98f740aa14e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD696 | 17388 bytes |
font_01_sfnt_off00010319.bin54b9b4b6ef19e75ab45a35b0eec87d17c9d783f80b6334974157e817bb856ec1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10319 | 10504 bytes |
font_02_sfnt_off00011b22.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B22 | 16792 bytes |
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