MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains numerous links to compromised WordPress sites, suggesting a phishing or malware distribution campaign. The heuristic 'SE_INVOICE_LURE' indicates the document's content is designed to deceive the user into clicking these links. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/85e0fd1612bd924c0fb3bccc2a91316e/22367750465.pdf In PDF document text
- https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/6ad32afbbf56900fc2204b3f641ba9f1/39760747824.pdfIn PDF document text
- https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/d974b413fb9bb40e9af380e3257e066f/41341747992.pdfIn PDF document text
- https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093bc4bd8edd---66591284456.pdfIn PDF document text
- http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16093e708a3acf---26598197990.pdfIn PDF document text
- https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/2a4j6gbrd834ac69dhm9onal96/68279529449.pdfIn PDF document text
- https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/6de0ef304f0171e055a31c06b605a99a/58624615092.pdfIn PDF document text
- http://hanhthien.net/uploads/file/totonakazudilodesezadudel.pdfIn PDF document text
- https://abugfreemind.com/userfiles/file/vukuvuxedilipegi.pdfIn PDF document text
- https://zlato-eu.cz/upload/files/mizosegunirikola.pdfIn PDF document text
- http://superplasticizer.cn/d/files/vinerewojari.pdfIn PDF document text
- http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160acf94dc7362---binununusupito.pdfIn PDF document text
- http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/e7ec4dceeec15d85a991541a7da72dfa/pefipazukesavopul.pdfIn PDF document text
- https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/b9d3cccbaaf97ba7f638c6ba24ea0b6f/muzavegaw.pdfIn PDF document text
- http://daeryuhealthcare.com/ckupload/files/74187827493.pdfIn PDF document text
- http://bayzones.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/25968719217.pdfIn PDF document text
- http://myboydfamily.com/clients/7/7f/7f513a2250c12de81a70a6735749c289/File/4486810181.pdfIn PDF document text
- https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/3f2119b41ea5b64fdd3b7c6667f29ed6/dazawujifaran.pdfIn PDF document text
- http://hz-karavany.cz/ckfinder/userfiles/files/suzivig.pdfIn PDF document text
- https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9cc1f77715---96682580602.pdfIn PDF document text
- http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16081722474df5---83706034243.pdfIn PDF document text
- https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/71d3cf33fe6827c5f0f6179f25a14061/kalol.pdfIn PDF document text
- https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b850a02d4c7---46862773252.pdfIn PDF document text
- http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/4fe560f7b2851db16fa0a1cbae89b482/lorabixozijuvavobijevek.pdfIn PDF document text
- http://tgtech-auto.com/userfiles/file/rufokanowanomizerapugewew.pdfIn PDF document text
- http://beiwendq.com/userfiles/file/721168829.pdfIn PDF document text
- https://nazragame.com/calisma2/files/uploads/33730663980.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=letter+of+acknowledgement+of+receiptPDF 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_off0000f07d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF07D | 10928 bytes |
SHA-256: a8ef2ef1b23748d1252ffe4bb063e78a3f05c027be5e744a2d9d6ed696684f46 |
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font_01_sfnt_off0001099f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1099F | 17612 bytes |
SHA-256: c79bf7abac74e485a7d6ed6eae7284ecaf3b7613ae469e29a6b1238072897b05 |
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font_02_sfnt_off00013793.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13793 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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