MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristic firings suggest the PDF is part of a link farm and contains a callback lure, aiming to trick users into calling a fraudulent number. Although no scripts were extracted, the PDF structure and URL patterns are consistent with phishing campaigns.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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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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.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/406c3742f893730703a04c46e7ef426f/fibufib.pdf
- http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a5972aafba4---43203483008.pdf
- http://chinajessie.com/seadata/data/uploads/img/file/162454015888.pdf
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/9n09n3kulssiekp25t8gmai643/44272369935.pdf
- http://karat-dobremiasto.pl/userfiles/file/69642826887.pdf
- http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16080822eaab58---40932080226.pdf
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/1615195343dfec5652ccf777f65ed15e/penusad.pdf
- https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16099b477d1197---83732506588.pdf
- http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5c647b9c7d---88341397271.pdf
- https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/4cea5205cc2b1ecbf737df5f7659113a/filegiwabov.pdf
- http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac587695697---geruzatomidorejit.pdf
- https://aquafilling.com/userfiles/file/15197147281.pdf
- http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a2fcf3441b9---xepexoberavivedojule.pdf
- https://ajitcoatings.com/uploads/jeriwexikofaz.pdf
- https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/r4ico618p1ee3a7qsdetvsupvt/1257410662.pdf
- https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/82acfc855485839eef6dd3d9b5fd51ba/56505508880.pdf
- https://groupunsur4.com/contents//files/9674727379.pdf
- http://vds-construct.pl/userfiles/file/gozorimobenafafakizajo.pdf
- https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/0f35efebb327426933a74380a9132b53/54083241017.pdf
- http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/qe9csb30hm8scbdhkac28g00l6/majel.pdf
- https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/bfc06ra80h0rs1tjns8sj1oeh6/36566982358.pdf
- http://heyumpnd.com/userfiles/file///vuduzusedum.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=flatworms+in+humans
- 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_off00012661.bin44ebf3b918dc302fae4d3509947387e974c4627c8664baccea9fbc1cdc1de19b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12661 | 16952 bytes |
font_01_sfnt_off0001529b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1529B | 16792 bytes |
font_02_sfnt_off00016ab2.bin705816d182403d5d6dd1e3a708628b9749e1a5747fefb213a3d9b164e01098bb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16AB2 | 10404 bytes |
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