MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample was flagged by multiple heuristics as a malicious PDF, including a critical ClamAV detection and an ML classifier indicating high maliciousness. It contains numerous links pointing to compromised CMS upload storage and disposable hosting, forming a link farm. The PDF's structure and the presence of these links strongly suggest a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9929
Heuristics 6
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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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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://niengrangchuyensau.com/upload/contentFile/file/kotakidujurax.pdf In PDF document text
- http://runhouchem.com/upload/files/96467592508.pdfIn PDF document text
- http://czernavendeghaz.hu/admin1/file/99820560418.pdfIn PDF document text
- http://hospitalityroyal.com/upload_files/file/jagujolupefonawufi.pdfIn PDF document text
- http://officinedesign.it/userfiles/files/nutesarezopemomi.pdfIn PDF document text
- https://zlato-invest.cz/upload/files/37217584434.pdfIn PDF document text
- http://celyroknaterase.sk/editor_uploads/system/files/kanalabiviluterikiradol.pdfIn PDF document text
- http://camdohungdung.com/upload/files/bezafaxumi.pdfIn PDF document text
- https://ebooksweb.net/files/file/kilaz.pdfIn PDF document text
- http://architettoannalisatinelli.it/userfiles/files/tejiwuxokavazugen.pdfIn PDF document text
- https://krantiservice.com/ckfinder/userfiles/files/29751237512.pdfIn PDF document text
- https://apteka-wratislavia.pl/halatecza/userfiles/file/6370579902.pdfIn PDF document text
- http://abwlanham.com/uploads/files/bolodof.pdfIn PDF document text
- http://joesservicecenternj.com/userfiles/files/kisanabujiziguboj.pdfIn PDF document text
- http://cioccolatogallucci.it/userfiles/file/26278510775.pdfIn PDF document text
- https://gyn-koe70.de/obrazky/file/renivuturabadi.pdfIn PDF document text
- https://cuatudongbinhduong.net/uploads/files/nutanunabagivojabuz.pdfIn PDF document text
- https://civilkontroll.hu/uploads/file/disodesudatoxipukonajum.pdfIn PDF document text
- http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/1613769a279492---25439762551.pdfIn PDF document text
- http://flirtproducties.nl/ckfinder/userfiles/files/51982971329.pdfIn PDF document text
- https://skvely-kup.cz/files/file/gugugefitofim.pdfIn PDF document text
- https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/161359b3feb397---88581755518.pdfIn PDF document text
- https://e-room.co/userfiles/file/50795988030.pdfIn PDF document text
- https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/ddd9ae8aed021139e50d2ffaf5dcb912/62793456053.pdfIn PDF document text
- http://kleinschadenexpert.de/userfiles/file/79874752965.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=go+board+keyboardPDF 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_off00010378.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10378 | 18264 bytes |
SHA-256: 23f145e009329b4011dca7bc7f7117c2f8e0c3fadfea52fe273acb94f8947a81 |
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font_01_sfnt_off000132a4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x132A4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00014abb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14ABB | 10116 bytes |
SHA-256: af0fff4588a9605a7a59ff0c12c43450e8d9b1ce1cd3549abcd26da046c50766 |
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