MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
The sample is a PDF file containing embedded JavaScript, which is a common technique for exploiting PDF vulnerabilities. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded JavaScript likely attempts to download and execute a second-stage payload from one of the numerous external URLs found within the document, many of which point to compromised or disposable hosting, suggesting a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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 http://fermobkorea.com/userfiles/file/20210907034401.pdf In PDF document text
- http://phoiinnhiet.com/images/uploads/files/sabofufitared.pdfIn PDF document text
- http://influences-vegetales.eu/assets/Image/files/4456230288.pdfIn PDF document text
- https://akproauto.net/nbloom/fckuploads/file/96630148971.pdfIn PDF document text
- https://jatransfer.com/userfiles/file/96362183072.pdfIn PDF document text
- https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/611d0e72f7cdf77e34e8af2cb0278af3/jexojizevaponulurab.pdfIn PDF document text
- http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/a7673ff84340ce2bf7c9bf600de8e6dd/tetukolet.pdfIn PDF document text
- http://www.derbysignandgraphics.com/uploads/file/foborawemuzafut.pdfIn PDF document text
- http://sanarina.de/ckfinder/userfiles/files/6524496573.pdfIn PDF document text
- https://booking-news.hkdnracing.com/webroot/editor-uploads/files/2267791877.pdfIn PDF document text
- http://studioambienteterritorio.it/userfiles/files/ruzinepiletudejokaxop.pdfIn PDF document text
- http://nut-shell.net/upload/files/pokipivofajexamenivozowe.pdfIn PDF document text
- https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/fb961ea1c25b4caf03d910744aa41ded/wowibuzugegaromugevepe.pdfIn PDF document text
- https://greenlakepaint.com/ckfinder/userfiles/files/mupum.pdfIn PDF document text
- http://wirheiraten.de/images/file/62789760749.pdfIn PDF document text
- https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/nhbt9v4jdvu3r0ja8vq2km8dbe/dixetijivasomororebafo.pdfIn PDF document text
- http://stmarysharipad.com/userfiles/file/64439309572.pdfIn PDF document text
- http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613812047c7f3---mizumuzorazepagegexato.pdfIn PDF document text
- https://beaszemin.com/files/32346875985.pdfIn PDF document text
- http://autosoftware.company/autoresponders_images/files/xorolesekogoxowaliret.pdfIn PDF document text
- http://albarossa.jp/js/upload/files/tevosafobekejadumutewe.pdfIn PDF document text
- http://xn--80aantfcaehjbxzf1m.xn--p1ai/userfiles/file/19037140754.pdfIn PDF document text
- http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1614c93b5c1aba---23136916994.pdfIn PDF document text
- http://bodemveenweiden.nl/bodem-veenweiden-img/11181062337.pdfIn PDF document text
- http://flomojapan.com/upload/files/86323477500.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=among+us+on+linux+freePDF 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_off0000b0dc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB0DC | 10480 bytes |
SHA-256: d2dada049f5d6d40f7442c098964634be80b034caecaae7da4cc07955777d7c4 |
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font_01_sfnt_off0000c8aa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC8AA | 14688 bytes |
SHA-256: 4720ce389b2f492047f6a4cbaacbb5786f3632699c96c715af5f852ce7c3581c |
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font_02_sfnt_off0000ed68.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED68 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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