MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was identified as malicious by ML classifiers and ClamAV, with heuristics indicating it functions as a link farm. Several URLs point to compromised CMS upload directories or disposable hosting, suggesting a phishing or malware distribution scheme. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic specifically highlights the non-clustered link farm nature of the document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
Heuristics 6
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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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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://nj-rshb.com/v15/Upload/file/2021929137431680.pdf In PDF document text
- http://bukharaatlanta.com/sites/default/files/file/98687921882.pdfIn PDF document text
- https://guruvinodji.com/Userfiles/file/nusomifudo.pdfIn PDF document text
- https://bloomlight.pl/_bloom/file/83574155967.pdfIn PDF document text
- http://www.americaninvest.net/upls/files/xijenuz.pdfIn PDF document text
- https://sassanoproperties.com/FCKeditor/file/mexawateb.pdfIn PDF document text
- https://thisissati.com/userfiles/files/vavatexubagigedejuko.pdfIn PDF document text
- http://otohondamientay.com/upload/files/mesimefozelajidamakefizi.pdfIn PDF document text
- http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/161336d5e0640f---55915464816.pdfIn PDF document text
- http://copy2d.com/ftp/image/file/71097447732.pdfIn PDF document text
- https://projetounificado.com/uploads/files/1989992213.pdfIn PDF document text
- https://cqhuaan.myhost360.cn/upload/files/10-01-19-51-19-80.pdfIn PDF document text
- http://word.mn/uploads/assets/3879728512.pdfIn PDF document text
- http://smeeing.com/userfiles/files/86212549738.pdfIn PDF document text
- https://martan.es/cenavarra_userfiles/files/23886666440.pdfIn PDF document text
- https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/ectkqaikap04u448uf8dgus2o4/40505012299.pdfIn PDF document text
- http://zezoalza.com/ckupload/files/89425651955.pdfIn PDF document text
- https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/0acfe6f9e3cb67da97deff64eb76f71f/japupidulem.pdfIn PDF document text
- http://stagegator.scorchmark.com/stagegator/ckfinder/userfiles/files/6533900966.pdfIn PDF document text
- https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/tv8l51g1dkqjuq69fjbp0cibvg/16340069711.pdfIn PDF document text
- https://accidentmatters.com/ckfinder/userfiles/files/12899723723.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=spanish+moss+and+treesPDF 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_off0000d5b5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD5B5 | 19252 bytes |
SHA-256: 519102782f2bda7e1fc826623d8dec12af07cfeb40afecc1e71285ab16c4ae90 |
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font_01_sfnt_off00010754.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10754 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011f6b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F6B | 10684 bytes |
SHA-256: 08de7dc14ed653cea23ab1398c0974a7ea1728c7ba2e271e1033fba6b22306e9 |
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