MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains a link farm pointing to numerous URLs hosted on compromised or disposable domains, suggesting an attempt to redirect users to malicious content. The presence of these links indicates a likely phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://hoya-system.com/uploads/files/202108211938563739.pdf In PDF document text
- https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/0hlractg9cjt8bc617etiq5bpc/bezipazoz.pdfIn PDF document text
- https://espiber.cl/images/uploadedimages/file/jefoxelafatijajaximix.pdfIn PDF document text
- http://career-id.org/ckfinder/userfiles/files/kijix.pdfIn PDF document text
- http://93564497.com/userfiles/53826516162.pdfIn PDF document text
- https://mszukam.pl/dat//file/kenipu.pdfIn PDF document text
- http://brightwayconsultancyservices.com/userfiles/file/22145122301.pdfIn PDF document text
- https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/1954a1995a16854c18b87860334d88eb/vojumupibivipixefib.pdfIn PDF document text
- https://drproperty.in/userfiles/file/zajoja.pdfIn PDF document text
- https://paymentor.nl/uploads//file/11749490174.pdfIn PDF document text
- http://yasaitogo.com/uploads/files/31406704497.pdfIn PDF document text
- http://101balkon.ru/upload/files/95398274160.pdfIn PDF document text
- http://piau-po21inn.com/CKEdit/upload/files/43323086313.pdfIn PDF document text
- https://bruceautoservice.com/files/file/podawebipupez.pdfIn PDF document text
- http://niestachow.pl/data/aktualnosci_imgs/file/sevedur.pdfIn PDF document text
- https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607fae87681e1---xedewufalatabetuwefuzan.pdfIn PDF document text
- http://portalcom-b2b.es/img/user///file/_0047841001620177894.pdfIn PDF document text
- http://bertrandetgastineaudesigners.fr/userfiles/file/dutajusexomenavaje.pdfIn PDF document text
- https://airbays.com/userfiles/file/33321259951.pdfIn PDF document text
- https://geneolock.com/ckfinder/userfiles/files/zilapedejegofiruk.pdfIn PDF document text
- https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/16098b27eaef01---60719886269.pdfIn PDF document text
- http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160afcc3aec38b---4735433833.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=english+worksheets+for+grade+1+pdf+freePDF link annotation
- 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_off0000bc1d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBC1D | 10992 bytes |
SHA-256: 6a4d807581499fa701d44fb10a4b7acb2ecf9c2d63c25d1d4c23110aecea18b8 |
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font_01_sfnt_off0000d57a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD57A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000ed8c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED8C | 16500 bytes |
SHA-256: 620f283e082c44923562c7d88906d6f4faa403439dd88af747ef2451b1e9d007 |
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