MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to various websites, including those hosted on compromised WordPress installations. The presence of 'utm_term' parameters suggests a phishing or SEO manipulation attempt to lure users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://infrive.ru/uplcv?utm_term=voloco+cracked+apk PDF link annotation
- https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/8s1uieeheq9tpmdaustvrvf873/66071373197.pdfIn PDF document text
- https://peusch.lu/userfiles/files/fosamo.pdfIn PDF document text
- http://partnercable.hu/files/93429830273.pdfIn PDF document text
- http://domadoma.cz/userfiles/file/83253145941.pdfIn PDF document text
- https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130671e61d2c---84986872990.pdfIn PDF document text
- http://watch62.ru/files/files/64831604581.pdfIn PDF document text
- https://lanna-flyingclub.com/ckfinder/userfiles/files/93479777004.pdfIn PDF document text
- https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/32s0i72b064hhmasfjrcno5nv5/lenipefipa.pdfIn PDF document text
- http://fitviewer.info/files/file/wibawazuxobowejisa.pdfIn PDF document text
- https://mami-m.com/Uploads/userfiles/files/tatonipumikupegopulad.pdfIn PDF document text
- http://oembag.com/uploads/files/202109111106117378.pdfIn PDF document text
- http://jcbcharpentebois.com/ressource/site-image/files/14246195158.pdfIn PDF document text
- https://badrivishal.com/media/vevunufepojejigime.pdfIn PDF document text
- https://masterjobintl.com/ckfinder/userfiles/files/xidomerulesesexipaxafuk.pdfIn PDF document text
- http://sriagasthiyarastro.com/FCKeditor/userfiles/file/korigugevesisunerevo.pdfIn PDF document text
- http://seasplendorpetro.com/userfiles/fovurukudesukizozusopu.pdfIn PDF document text
- https://heritran.vn/uploads/news_file/saxeboguzir.pdfIn PDF document text
- https://poganyvolgyi.hu/userfiles/file/bewibaxafigopuzuj.pdfIn PDF document text
- https://leganordavigliana.it/uploads/file/10990869762.pdfIn PDF document text
- http://minhanh.com/files/98775221443.pdfIn PDF document text
- https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/16148d49ec28f1---kokafor.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_off0000b176.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB176 | 17668 bytes |
SHA-256: d2e000e414c40b3e7809e8583a1b6cb0a056ac19e58ffd02aa47f8a5c7aef759 |
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font_01_sfnt_off0000dec9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDEC9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f6e0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF6E0 | 10108 bytes |
SHA-256: 8940f70f28a301bd72975893e20a4460b0b7b1206b526e8ac3dae1274e5fe963 |
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