MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
T1059.007 JavaScript
The sample is a PDF containing embedded JavaScript, flagged by ML classifiers and ClamAV as malicious. It hosts a link farm pointing to multiple domains, many of which appear to be compromised or disposable hosting, suggesting a phishing or malware distribution scheme. The embedded JavaScript likely facilitates the redirection to these malicious URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9987
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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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://baigiangtoanhoc.com/upload/files/bogetitazukejot.pdf In PDF document text
- http://igabana.com/upfolder/e/files/20210705012118.pdfIn PDF document text
- http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607cc29a5db1d---kogakere.pdfIn PDF document text
- http://garagehayashi.com/js/upload/files/33254380558.pdfIn PDF document text
- http://netflor.pl/upload/File/lobarerasuvo.pdfIn PDF document text
- https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/0a60e4f11956d74561488f781e3ccffc/duravunokifiwifedogak.pdfIn PDF document text
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/67e6cca016478d454b30b7c441e8a928/kinarodapifevilemeb.pdfIn PDF document text
- https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/3d420bc6810a1d8eeabbfc0192b81e64/59643259901.pdfIn PDF document text
- https://tangentemag.com/img/file/87061931936.pdfIn PDF document text
- https://almoheetmanpower.com/public_html/userfiles/file/gudasusajid.pdfIn PDF document text
- https://canevastoilestjean.com/upload/editor/file/korigowoperaw.pdfIn PDF document text
- https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160e4470151f16---5995014812.pdfIn PDF document text
- http://sgd42.ru/userfiles/file/rivafonufirojufanogu.pdfIn PDF document text
- http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a16ad97740b---bodojanakez.pdfIn PDF document text
- http://benetalent.com/upload/files/zazuwigobogusu.pdfIn PDF document text
- https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/8722f24d381ac59b429f7ccee2290243/61507270946.pdfIn PDF document text
- http://tantos.jp/js/upload/files/bojofofojavebuwujim.pdfIn PDF document text
- https://www.servicioscalibrados.com/wp-content/plugins/super-forms/uploads/php/files/4c3b5f2bb25026fac4f2f614f93769f1/devezowo.pdfIn PDF document text
- http://clasesholandes.com/userfiles/file/wumizopewun.pdfIn PDF document text
- http://kaies.cn/upfiles/file/7326367493.pdfIn PDF document text
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/da9c1e35f8f0112b6b7b346055022720/metamezefog.pdfIn PDF document text
- http://keramann.ru/uploads/files/setizoda.pdfIn PDF document text
- https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/161235cedde388---burifubibapopamadi.pdfIn PDF document text
- http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fb0f32f3aa7---83798420278.pdfIn PDF document text
- https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/ta2hn5euraq3jmc0l75mdbg5uk/feluwumuvofezewa.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=engine+overheated+and+lost+oil+pressurePDF 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_off0000cff7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCFF7 | 10820 bytes |
SHA-256: ae13b62a076eb8ac8db160332f473a15e29f4ed39ad7196118c219d7b2ffeea4 |
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font_01_sfnt_off0000e8ae.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8AE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000100c0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100C0 | 15780 bytes |
SHA-256: f11ea3495c4241ca4fccaecc7f19ed138d2657af2e26a84da96b677e306de882 |
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