MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed for malicious redirection. The ClamAV detection and ML classifier strongly suggest a phishing or trojan payload. The presence of external URIs and link farm heuristics confirms the malicious intent of redirecting users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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 https://pistant.ru/uplcv?utm_term=balloon+td5+unblocked PDF link annotation
- http://archiwum.wyryki.eu/admin/ckfinder/userfiles/files/25901079607.pdfIn PDF document text
- http://shahnawazonline.com/uploads/files/89992755435.pdfIn PDF document text
- http://yao-cheng.com/uploadfiles/20210915154710.pdfIn PDF document text
- http://www.rajpuc.pl/pics/file/77935778431.pdfIn PDF document text
- http://turinhotelcompany.com/userfiles/files/gikovetizez.pdfIn PDF document text
- http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131bbee5f904---2614527264.pdfIn PDF document text
- https://posaonakosovu.com/ckfinder/userfiles/files/75925220447.pdfIn PDF document text
- http://homeopathyhongkong.cn/files/23794371829.pdfIn PDF document text
- https://atlastoursntravels.com/userfiles/file/67919327279.pdfIn PDF document text
- http://podushka.by/files/files/59901980112.pdfIn PDF document text
- https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613fa0bf35b94---lesawuvojobilevonubaxuran.pdfIn PDF document text
- http://mutamobilya.com/images_upload/files/28701398236.pdfIn PDF document text
- http://tatishev.ru/admin/ckfinder/userfiles/files/36048854822.pdfIn PDF document text
- https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/16134a0e0bfb4b---71948750531.pdfIn PDF document text
- https://arendic.cl/files/wopizib.pdfIn PDF document text
- https://intervalhousehamilton.org/ckfinder/userfiles/files/22885136264.pdfIn PDF document text
- http://albino-pitti.com/pub_img/file/20094322939.pdfIn PDF document text
- http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/161316aea6a3dc---98122750414.pdfIn PDF document text
- http://lnv-cnc.com/userfiles/file/kazoko.pdfIn PDF document text
- http://bayernglobal.de/userVZ/file/19363250599.pdfIn PDF document text
- http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/16146f22deb13f---52467816799.pdfIn PDF document text
- http://amsuatrust.org/survey/userfiles/files/rasuxuwa.pdfIn PDF document text
- 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_off0000ac4e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAC4E | 16484 bytes |
SHA-256: cad89b7a450e5d8d583a0fdc88b81c9b59f90776c4a097ec953dc887ab819fc0 |
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font_01_sfnt_off0000d58b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD58B | 10520 bytes |
SHA-256: 9ad8cc3363bc3d1a87029c143238030a3101dbf2e1280062c1eb67b3dce15937 |
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font_02_sfnt_off0000edbe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDBE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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