MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic firings suggest it functions as a link farm and a callback phishing lure, directing users to potentially compromised websites. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a social engineering attack designed to trick the user into initiating contact with an attacker.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
Heuristics 7
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://www.nosolodespedidas.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607da2e28f7ff---razix.pdf
- http://aihyang.com/userfiles/file/87695713424.pdf
- http://robertoantoniz.com/resources/original/file/37065362368.pdf
- http://perles-del-beya.com/userfiles/file/nituxuwivujeram.pdf
- http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/16082029bc63fb---memaboxijupenolanoso.pdf
- https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1607e4174454e2---10326854559.pdf
- http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a17084aec44---rosiw.pdf
- http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/a3fb9f43bb0d2166b838857b67b27f57/pedotalodezukugesiropazu.pdf
- https://chupwo.com/editor_upload/file/wifasobevarizilewivevas.pdf
- https://mls.lighting/wp-content/plugins/super-forms/uploads/php/files/27065de82d5c014faa678cd8b4646997/42766763169.pdf
- https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076595cdc543---zuxepikogesefowexiz.pdf
- https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/ce29bf6e26a07e03670fae451af648b6/latugaka.pdf
- https://terminal.hr/userfiles/file/34906720769.pdf
- https://an-professional.ru/img/files/file/doxawedixowivanifoxab.pdf
- https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/a57b81d212bdc9afd39df7a092dbf3c1/84916199101.pdf
- https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/b2c38a6566b85d20aad38a88f9f33cae/zudiwikixamugopokebo.pdf
- https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/bbfc4d33c5c4fe5097e957c9d3babdf7/xewisije.pdf
- http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160858cce66957---83636487928.pdf
- https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/68acc159220890f2a69119dacaa51158/xulevodekuxepol.pdf
- https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078e4f013b85---99320365437.pdf
- https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608460eeaca8d---82330034504.pdf
- https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/2adbff0d6e25c08425e9fb710cbc773a/28673899906.pdf
- http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5fc8aac82d---gokunozaripazejagunemus.pdf
- http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d5791ef6da---47628449680.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=how+to+find+nitro+pro+serial+number
- 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_off0000cbbf.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCBBF | 16792 bytes |
font_01_sfnt_off0000e3d6.bin249e5c89fcb852b4c09bdf53b9bde70febb615dcbb0e7eff305a1838be11121e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE3D6 | 10976 bytes |
font_02_sfnt_off0000fd0a.binbe9bc7c3adf5cfd20f2f4301915aacd527815143b9cd23b1f6aca2cb8d7b25b5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD0A | 16248 bytes |
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