MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is a common technique for executing malicious code. The heuristics also indicate the presence of a link farm pointing to compromised WordPress upload storage and disposable hosting, suggesting a phishing or malware distribution lure. The ML classifier and ClamAV detection strongly support the malicious nature of this file.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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://onlinetalk.jp/app/webroot/img/fckfiles/file/53119717153.pdf In PDF document text
- http://hoangminhceramics.com/app/webroot/uploads/files/20977614366.pdfIn PDF document text
- http://dinhvi5s.com/images/newtech/files/37998737987.pdfIn PDF document text
- http://banglenhospital.com/UserFiles/File/32043612936.pdfIn PDF document text
- https://pokereshop.cz/data/file/sewutilixusixekolagenilab.pdfIn PDF document text
- http://vimar.ua/userfiles/files/xorixonixezubiwedupixefef.pdfIn PDF document text
- http://andrenickels.de/ckfinder/userfiles/files/47262273744.pdfIn PDF document text
- http://pawsandtiaras.com/ckfinder/userfiles/files/bowogadameke.pdfIn PDF document text
- https://noble-program.site/js/ckfinder/userfiles/files/bamewixovomelebul.pdfIn PDF document text
- https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615a4e94c08a5---delefodazemumisuxibevu.pdfIn PDF document text
- https://cristalparkhotel.com/ckfinder/userfiles/files/gejikibude.pdfIn PDF document text
- https://jurad.eu/files/file/59659998989.pdfIn PDF document text
- http://medianet2000.net/amm_prod/image_news_popup/file/xebemurokonijitajuliba.pdfIn PDF document text
- https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614a00f2cb13f---22720906352.pdfIn PDF document text
- https://dakhoathienhoa.net/images/files/wagitelexizifekedoxuka.pdfIn PDF document text
- http://curry-box-deluxe.de/userfiles/file/lujesuzu.pdfIn PDF document text
- http://anhuicrew.com/upload_fck/file/2021-9-5/20210905184558805574.pdfIn PDF document text
- http://qzgj.cn/upload/file/77224556931.pdfIn PDF document text
- https://ever.dacola.com/upload/files/44969085163.pdfIn PDF document text
- http://divorce-difficile.fr/userfiles/file/8972778321.pdfIn PDF document text
- http://aweibel.com/Photo/file/lajipemitexip.pdfIn PDF document text
- http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613db60854921---55077376009.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=little+long+in+the+toothPDF 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_off0000b2e3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB2E3 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000caf5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCAF5 | 17260 bytes |
SHA-256: 6a91dd5bf71a57d61476ff5e1b761ee63e7a8b3b3f42f3f06677726618924932 |
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font_02_sfnt_off0000f779.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF779 | 9912 bytes |
SHA-256: 6c50b7bdc552ad0e6dbfe70539c581b64bbdb69112e654874b28bd142181d8f8 |
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