MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to external PDF files hosted on compromised websites. This suggests a phishing or malware distribution campaign, where the initial PDF serves as a lure to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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 https://bomberosdenavarra.com/userfiles_nexo/files/kopilemebirula.pdf In PDF document text
- https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/aa8856825bb0153abc04ccc2a991b2b0/65342443692.pdfIn PDF document text
- https://kvzriu.org/images/file/84652740816.pdfIn PDF document text
- http://locum-system.pl/userfiles/file/73079327334.pdfIn PDF document text
- http://teknis.it/userfiles/files/rulukifutubideti.pdfIn PDF document text
- http://sdds.be/userfiles/file/nivaparetaw.pdfIn PDF document text
- http://denda.co.kr/ckfinder/userfiles/files/fosagisa.pdfIn PDF document text
- http://texinpack.com/uploadfile/file///2021090720485543.pdfIn PDF document text
- https://tidymoney.com/ckfinder/userfiles/files/41077969313.pdfIn PDF document text
- https://samngaimarble.com/html_upload/file/25801207623.pdfIn PDF document text
- https://asharfilalkulfi.com/ckfinder/userfiles/files/91855916189.pdfIn PDF document text
- http://ykzn8.com/upfiles/editor/files/zetovawowe.pdfIn PDF document text
- https://electroagro.es/pub/files/koxuxazesegubur.pdfIn PDF document text
- http://nfc.soo.jp/file/ropelomefolafegisivowes.pdfIn PDF document text
- http://iknow.pl/files/file/64680061415.pdfIn PDF document text
- https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/d6f2585d3be2af022d6e3d43d3fc172d/febujugomosafazajoxu.pdfIn PDF document text
- http://globalbando.com/DATA/upload/files/202109082207264367.pdfIn PDF document text
- http://iact2001.com/userData/board/file/75368634260.pdfIn PDF document text
- http://euroambulans.pl/userfiles/file/571594408.pdfIn PDF document text
- http://www.bufolari.com/public/immagini/file/tevimuwekizere.pdfIn PDF document text
- https://remont-bez-zabot.ru/files/file/birexoxaruxixubirokifi.pdfIn PDF document text
- http://eca.or.th/ckfinder/userfiles/files/69364793319.pdfIn PDF document text
- http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/c171902fc7b0dabbcc2d9716d87d4a94/guvolekanawaxupovabi.pdfIn PDF document text
- http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613d1b60546c1---75436632153.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=two+dots+mod+apkPDF 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_off0000cebd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCEBD | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e6cf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE6CF | 16504 bytes |
SHA-256: 2b0f7c773adf618a10791d6a6bc7c11d1e16558f9a8d49fd940ddd2447832d40 |
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font_02_sfnt_off0001117c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1117C | 10220 bytes |
SHA-256: d447209f4d7b4e9205443abe48af073d63be6d2622f163105b7070ff362c3634 |
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