MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was detected as malicious by ClamAV and an ML classifier. It functions as a link farm, directing users to download other PDFs from compromised WordPress sites, disguised as free technical book downloads. The embedded URLs and the nature of the links suggest a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://crewmak.ru/uplcv?utm_term=murach%2527s+html5+and+css3+pdf+free+download PDF link annotation
- https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/fk521oo8lm1579s1odlik3r8fr/54062853446.pdfIn PDF document text
- https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/1beb4ae6e6b7410f4e7c317a047cdc2e/5277354803.pdfIn PDF document text
- https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16083dd8f75068---704964565.pdfIn PDF document text
- http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16090c3ce1083d---8133918329.pdfIn PDF document text
- http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/160aba3aaa3b81---lovef.pdfIn PDF document text
- https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/d0jnrnpcbjg83mc3ktttjbg8f1/26731566830.pdfIn PDF document text
- http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160ac0bd15682e---wezukotupizanal.pdfIn PDF document text
- https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/859606ed3c96673d0d5c96d33bf35370/68725917752.pdfIn PDF document text
- https://doellefjelde-mussemarked.dk/images/newsmail/file/60118980273.pdfIn PDF document text
- http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/avul6hdln9ql8chsu53ol0b8b0/28953625253.pdfIn PDF document text
- https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/343d3e8a1eec5c83b1fdff682fb7bb6e/24427231574.pdfIn PDF document text
- http://kopdesign.nl/userfiles/file/xufed.pdfIn PDF document text
- https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/c7ef909d517758d32458b3d4dabfc1ce/xanixobupumizap.pdfIn PDF document text
- https://condominiovillage.com/userfiles/file/tateroxubune.pdfIn PDF document text
- http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160bcc69fe305e---fafarutipevubofenijat.pdfIn PDF document text
- https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160948280af7c5---32475722783.pdfIn PDF document text
- https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/eae492add1b2950e5c8dbec2445557d8/31985263649.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e960.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE960 | 5816 bytes |
SHA-256: cdf2f4cfa447f0c5def5328fedcfa961d045f02e914ed866e7e24f66f99b7e1c |
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font_01_sfnt_off0000fd2d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD2D | 11204 bytes |
SHA-256: 778ab9594ce8b009d8f4adae7a4825db2f54934c98605dc3d3c9a979568ffec5 |
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