MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous external links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm for phishing or malware distribution. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, appears to be a lure related to 'basic physics for engineering', likely intended to trick users into clicking the embedded malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 5
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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://infrive.ru/uplcv?utm_term=basic+physics+for+engineering PDF link annotation
- https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8be5fd6cba---89681302106.pdfIn PDF document text
- https://pypconsultores.mx/userfiles/file/70462183476.pdfIn PDF document text
- https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/d8127c66d25023786a4a0c3e8b9170a4/29047671523.pdfIn PDF document text
- http://aceonlinementors.com/userfiles/file/jirululesawawovatopi.pdfIn PDF document text
- http://skolicka.eu/foto/images/file/12229545829.pdfIn PDF document text
- https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/larj6t6e2gv3qg2dilnqt5prn0/xisore.pdfIn PDF document text
- https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2d9dbd4131---dedegeb.pdfIn PDF document text
- https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/16085f8bb34083---41920691681.pdfIn PDF document text
- https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/a21rkl9s0tbppl69smqa4ob3jc/98496075688.pdfIn PDF document text
- https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/ac20b188cd67fc738c27e9f4e34089a6/komekeb.pdfIn PDF document text
- http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160758dc8d1639---kabavofilejijakutikivodeb.pdfIn PDF document text
- https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b63dfd76cc3---64449234629.pdfIn PDF document text
- http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/160771daf4af97---fubosil.pdfIn PDF document text
- http://preserveproperties.com/userfiles/files/lawole.pdfIn PDF document text
- http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b7b1e31019d---40010575781.pdfIn PDF document text
- http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609bf5da6a18d---3400520521.pdfIn PDF document text
- https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f959c948ae---gejor.pdfIn PDF document text
- http://allseasonsart.com/uploads/fck_uploads/file/34233769611.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In 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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000cd47.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCD47 | 5104 bytes |
SHA-256: 043025ae00ff1c5f29e5df0cebee72d4f909c73890f60cda16b153170259be4b |
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font_01_sfnt_off0000de98.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE98 | 9376 bytes |
SHA-256: 683bee68cc7a8e9a66db34ef6fffb2a9c551e2d6b08708b36e5f42851e179ac7 |
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font_02_sfnt_off0000fea6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEA6 | 4324 bytes |
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
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