MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is a PDF containing embedded JavaScript, which is often used to redirect users to malicious websites. Several heuristics indicate the PDF is part of a link farm, with many URLs pointing to potentially compromised or disposable hosting. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://coretry.ru/uplcv?utm_term=placement+test+intermediate+english+pdf PDF link annotation
- http://sinosteelcode.com/filespath/files/20210824191323.pdfIn PDF document text
- http://skyrun-arser.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210627220522900749iyg7tf.pdfIn PDF document text
- https://classconnbio.com/img-jacson/files/72720893435.pdfIn PDF document text
- http://skolicka.eu/foto/images/file/62486842909.pdfIn PDF document text
- https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/3911df7313f0e70d98d0e0a9d00d14c7/nisuwinami.pdfIn PDF document text
- http://www.radanhorse.com/resource/files/2780197110.pdfIn PDF document text
- http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610f47d15e677---tiwavavonoxim.pdfIn PDF document text
- https://rajaketiga.com/contents//files/ririn.pdfIn PDF document text
- http://sloplast.com/userfiles/files/14884919340.pdfIn PDF document text
- http://michellenevinracing.com/FCKeditor/file/71601089806.pdfIn PDF document text
- https://atcotourismtravel.com/userfiles/file/83169612223.pdfIn PDF document text
- https://xn----8sbcehyodmtf1czh.xn--p1ai/userfiles/file/diduwukitowijafur.pdfIn PDF document text
- https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fdbf64d7a79---78203825228.pdfIn PDF document text
- http://inarchengineering.it/userfiles/files/18592335810.pdfIn PDF document text
- https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b42a3d96495---pivodewewufededeviwa.pdfIn PDF document text
- http://midesignvn.com/uploads/files/nalodipamapamarala.pdfIn PDF document text
- http://jshtextile.com/UserFiles/file///57225924289.pdfIn PDF document text
- https://visionbrindes.com/admin/fckeditor/userfiles/file/98312075744.pdfIn PDF document text
- http://suriyedostlukdernegi.org/image/files/90046484477.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_off0000dea1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDEA1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f6b8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF6B8 | 10948 bytes |
SHA-256: b15c96db606fe85fce2b567bfa6d1159b088bdff608bc262b0bbba69794c5933 |
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font_02_sfnt_off00010fa2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10FA2 | 16944 bytes |
SHA-256: c0d16d04f8560b1e1c43dbb404dc2851e8afc3dc9721a953d2cebc334fb4d442 |
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