MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a phishing or malware distribution campaign. It contains embedded JavaScript and numerous external links, many of which point to compromised WordPress sites acting as a link farm. The presence of JavaScript suggests an attempt to execute malicious code or redirect the user to a malicious site.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/2956b4f8f296517f4cfc142282dd5e91/38761951321.pdf In PDF document text
- http://tygodnikzuzlowy.pl/ckfinder/userfiles/files/49175266219.pdfIn PDF document text
- https://fivetc.net/uploads/files/34416561034.pdfIn PDF document text
- http://texinpack.com/uploadfile/file///2021090410344167.pdfIn PDF document text
- http://methese.com/upload/files/72180750877.pdfIn PDF document text
- http://zhihepvb.com/upload/ckimg/files/202109051251098977.pdfIn PDF document text
- http://discus-rus.ru/upl/file/pufisonalupa.pdfIn PDF document text
- http://win-sonic.com/ck_imgs/files/99248870958.pdfIn PDF document text
- https://lingchuanfloor.com/app/webroot/userfiles/files/binupipowudajezasa.pdfIn PDF document text
- http://koreanhotpot.com/uploads/files/77039960965.pdfIn PDF document text
- http://npi-management.org/ressource/site-image/files/75099506563.pdfIn PDF document text
- http://sibleyestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/68686277494.pdfIn PDF document text
- https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/f1bfa0ee64676027b65988c0a8ebb687/39273986669.pdfIn PDF document text
- http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/16130277306f4e---togufawuj.pdfIn PDF document text
- https://vinadesigndanang.vn/uploads/image/files/retow.pdfIn PDF document text
- https://curewelldiabetes.com/userfiles/file/niwaba.pdfIn PDF document text
- http://www.jacenter.org/js/ckfinder/userfiles/files/42042309029.pdfIn PDF document text
- http://otestmanager.org/club/data/userfiles/file/20210906222315.pdfIn PDF document text
- http://bidwoodmachine.com/d/files/64912373632.pdfIn PDF document text
- https://recrut.com/files/files/59505825502.pdfIn PDF document text
- https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139ca1cdaf0d---66711385585.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=aha+app+in+android+tvPDF 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_off0000d3e5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD3E5 | 18564 bytes |
SHA-256: 543636c691b009decea09b9323ba6b093412d4055fe49cf0586a473a8a6e30c0 |
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font_01_sfnt_off000104fb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x104FB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011d12.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D12 | 10188 bytes |
SHA-256: 391e3eed3667a57e20557d7c1e9d6ca3e67fca6b908d26ac8025698187428f7c |
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