MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for executing malicious code. It also features a link farm pointing to multiple distinct hosts, some of which are hosted on compromised CMS upload storage, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
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://wronba.pl/uploads/wysiwyg/file/14132114637.pdf In PDF document text
- https://www.utn.ac.cr/sites/default/files/files/10513531427.pdfIn PDF document text
- http://weighlessthisyear.com/ckfinder/userfiles/files/jivipaf.pdfIn PDF document text
- https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/77e06d566a2b960d7b0bd33e3c00ccdf/87605259847.pdfIn PDF document text
- http://rideco.hu/upload/file/xipunuvojibuje.pdfIn PDF document text
- https://luatkhangthai.vn/upload/fck/file/7125006506.pdfIn PDF document text
- http://clear-es.net/yamituki-n/uploads/files/taxuvuwejagimolaxaviwux.pdfIn PDF document text
- http://mfahk.com/upload/files/76564143844.pdfIn PDF document text
- http://maksimetall.ru/files/26424883654.pdfIn PDF document text
- http://www.maderas-navarro.com/ckfinder/userfiles/files/98426993028.pdfIn PDF document text
- https://citytrafik.nu/images/file/42335689871.pdfIn PDF document text
- http://majortaylorride.info/images/uploaded/file/89999398235.pdfIn PDF document text
- http://panhongbo.com/ckfinder/userfiles/site_eachfun_com/files/62680006202.pdfIn PDF document text
- http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/16148937c4ba60---viruro.pdfIn PDF document text
- http://skontrolsengineering.com/file_media/file_image/file/fewow.pdfIn PDF document text
- http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613741359253d---xomogukegidewemige.pdfIn PDF document text
- http://volvo-cars.jp/js/upload/files/vobonepulideseboduxorunu.pdfIn PDF document text
- https://highlander-inn.com/assets/userfiles/files/mafitudewagakabil.pdfIn PDF document text
- https://huanghecables.com/d/files/beligunobedezazegumeralu.pdfIn PDF document text
- http://a899.net/userfiles/file/nujamikinawe.pdfIn PDF document text
- https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140fe928744a---xubedomuzazozatifakejoro.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=mod+gta+v+para+gta+san+andreas+androidPDF 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_off0000e168.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE168 | 17772 bytes |
SHA-256: b6226485c73e46883029cf70d792b9531a43292eee2c10876fc1046cb397e537 |
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font_01_sfnt_off00010ee7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10EE7 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000126fe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x126FE | 10580 bytes |
SHA-256: e18b4ce5fb64ab6a45275f34d0182196eaf7af78ab6dc5fecf76faadce23ff0d |
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