MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external links, including one pointing to a compromised WordPress upload storage, and exhibits characteristics of a link farm. The presence of a 'download button' lure suggests an attempt to trick the user into downloading a secondary payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://chcial.ru/uplcv?utm_term=mbox+android+tv+box+firmware PDF link annotation
- http://autohondl.cz/userfiles/file/78126180041.pdfIn PDF document text
- http://standdominica.org/files/files/57058271358.pdfIn PDF document text
- https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/892e0c30d495275a8c19d2c0ed73e746/76210771784.pdfIn PDF document text
- https://www.rapn.ru/ckfinder/userfiles/files/lotanegu.pdfIn PDF document text
- http://lncxjzxxw.com/upload_fck/file/2021-9-7/20210907134658157697.pdfIn PDF document text
- http://zkqzl.com/uploadfile/file///2021091307171832.pdfIn PDF document text
- http://shouce-image.kuchuancdn.com/Public/resource/files/semujixadajegaxotaj.pdfIn PDF document text
- http://liavanhaeringen.nl/userfiles/files/lejeviwoberapo.pdfIn PDF document text
- http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1612ef3eb3ab62---wezufepiwi.pdfIn PDF document text
- http://vividconcept.in/userfiles/file/katuvelezis.pdfIn PDF document text
- http://thumpamonpally.com/userfiles/file/80285945936.pdfIn PDF document text
- http://www.hussco-steel.com/husscofiles/files/83807880690.pdfIn PDF document text
- https://jogamiskolc.hu/ckfinder/userfiles/files/goxuwowagevikorodumese.pdfIn PDF document text
- http://www.somdattabasu.com/fckimages/file/55338429837.pdfIn PDF document text
- http://w-f-l.de/user_img/file/kojera.pdfIn PDF document text
- https://dpengineerindia.com/admin/userfiles/file/76640695412.pdfIn PDF document text
- http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140b8a5b2b44---88207877115.pdfIn PDF document text
- http://fgosvo.ru/files/files/begifi.pdfIn PDF document text
- http://savytrading.com/userfiles/file/14676221262.pdfIn PDF document text
- http://spbmedaks.ru/sites/default/files/uploads/todalimipadiwogadekil.pdfIn PDF document text
- https://alistairmills.com/ckfinder/userfiles/files/xemidolipo.pdfIn PDF document text
- http://feldbach-tourismus.at/files/22171566563.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_off0000e5f0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5F0 | 21424 bytes |
SHA-256: 4caf8499b4dcfcd37b82332abac17e9453bcbd5f2ee5ecf6a5964e48835d1f63 |
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font_01_sfnt_off00011e54.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E54 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001366b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1366B | 10688 bytes |
SHA-256: adcafdcf15fa020c5a2cc2ceac52d1162cffa59b15d1a72759e3c28d75e5d45b |
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