MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is identified as malicious by ClamAV and an ML classifier, and contains numerous external links. Several heuristics indicate it functions as a link farm, with many URLs pointing to compromised CMS uploads or disposable hosting, suggesting a phishing or malware distribution scheme. The presence of embedded URLs and the PDF structure strongly suggest it is designed to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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://nomylo.ru/uplcv?utm_term=francesco+el+llamado+pdf+gratis
- https://granitnet.hu/editor_up/12574250072.pdf
- https://badrivishal.com/media/4266365482.pdf
- https://vico-immobilien.com/ckfinder/userfiles/files/31466002452.pdf
- http://csc-028.com/userfiles/file/20210919224321_k8v6vl.pdf
- http://auburn-companies.com/userfiles/files/27020387344.pdf
- http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/161362975b41f9---lakukonupeb.pdf
- http://livelyway.com/ckfinder/userfiles/files/tatutun.pdf
- https://eobliecky.sk/userfiles/file/bojivimesusaz.pdf
- https://senfina.top/uploads/files/10747785225.pdf
- https://harom.ro/files/file/supizadimimovifuleka.pdf
- https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b49e6c6d46---8945223843.pdf
- https://wsbe17hongkong.hk/_bin/ckfinder/userfiles/files/34036647710.pdf
- http://edilgroupdigiovanni.it/userfiles/files/53613115971.pdf
- https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/20d5263b81ff71ca3b4ba21260ba93d4/63324786129.pdf
- https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147644ceac11---kisokadakag.pdf
- http://paradisetnl.com/FileData/ckfinder/files/20210908_8C2A38AF1514920C.pdf
- https://cubic.is/userfiles/file/10848536913.pdf
- https://gberwanda.com/gbe/useruploads/blogs/files/gatorapab.pdf
- http://socukorglutamatmentesfuszer.hu/ckfinder/userfiles/files/sidatituz.pdf
- http://duythuc-bearing.vn/uploads/userfiles/file/40724035684.pdf
- https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1612ee39eb0477---73288791319.pdf
- http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/161456bc73e9f6---fepajupuwezezimisinor.pdf
- http://pokemom2.com/uploads/files/38452915058.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_off0000cf22.binfbf214355a5efbac79fba0f371f7b7d7323a3109c50f29008db24d32b976d441 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF22 | 19120 bytes |
font_01_sfnt_off0000ff38.bin7befe3574a19adfc55f213797cfd3ddeee67e54b434982fe024c37a523dfffc3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF38 | 10940 bytes |
font_02_sfnt_off00011852.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11852 | 16792 bytes |
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