MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was identified as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, with numerous URLs pointing to compromised WordPress sites, suggesting a phishing or redirection scheme. The presence of multiple distinct hosts and the use of UTM parameters in some URLs further support this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
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 http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/160aa4bed2f4e0---19395207089.pdf
- http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd3884d8a55---fepapasofomasobuboxo.pdf
- https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160ba3ce96046f---33372786385.pdf
- http://inlygiaylynhua.com/upload/files/joredotivipemipisoga.pdf
- http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160727a1f9e601---74285427121.pdf
- http://millecolori.it/images/file/38869549093.pdf
- http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/c389e3d230cc19d932834b2b1ae3a969/muxigerojaziwivoforanun.pdf
- https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/57bf3757405519f4fbf1febf46db5652/kosivukorak.pdf
- https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/d8627496b241bc5ad1197c83ddf49f05/63290943863.pdf
- http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1609cb6158c63d---jopagifepufebedosuxujus.pdf
- http://wildpflanzen-planung.de/file/dujagexonufagasetu.pdf
- https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/a8b5ae0ac63a040325bccdbd08f11f06/78888782524.pdf
- https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/4bvj1te8dc03bhf8h7sae7e930/nuvapoberebofogepasoluwu.pdf
- https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160accdecd5d48---wupapozumewewane.pdf
- https://clubforeducation.com/FCKeditor/userfiles/file/79366418176.pdf
- http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099ef4a15a9d---26838593954.pdf
- http://goref.ru/files/file/tebewajigemojasogupez.pdf
- http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/87abc66fe79990a167f658ce6986f2c0/8574345649.pdf
- https://slaterlighting.com/wp-content/plugins/super-forms/uploads/php/files/b67d10c40a6226e1862eab3f7ee045bb/lafepavizu.pdf
- http://npi-management.com/ressource/site-image/files/xikafas.pdf
- https://anpheatingandac.com/nbloom/fckuploads/file/beziwiledegoxevabumolato.pdf
- http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607399116f46e---51657397837.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=ms+pipe+fittings+catalogue+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_off0000eb6f.binab415efff7c485f8db3f8327680740d631fd7beb3905c7742c31bb91a955cb21 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB6F | 10788 bytes |
font_01_sfnt_off0001043d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1043D | 16792 bytes |
font_02_sfnt_off00011c4f.bine4d9438f90123eb15097c8e4007da92095f9805865ae6636e0b3213f18078590 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C4F | 17716 bytes |
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