MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript and a significant number of external links. Many of these links point to compromised CMS uploads or disposable hosting, indicating a link farm designed to obscure the ultimate destination. The embedded JavaScript, while not fully analyzed due to obfuscation, is a common vector for further exploitation. The ClamAV detection and ML classifier 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-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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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 http://atmaircenter.com/lb/userfiles/files/tenozenuzatulop.pdf In PDF document text
- http://championsview.net/userimages/vopaxumozenukofosovexuja.pdfIn PDF document text
- http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/33076390f8609cee92bd549974bdbd4f/jurunufozibivefenasot.pdfIn PDF document text
- http://keacg.com/upload/files/62384822735.pdfIn PDF document text
- https://eatorhours.org/e-bussiness/fckimages/file/20269766758.pdfIn PDF document text
- http://tycoonmedical.com/userfiles/file/pezutixodopigizarobe.pdfIn PDF document text
- https://asiarsolutions.com/userfiles/file/vijikupularevuxobumaw.pdfIn PDF document text
- http://skkouty.cz/ckfinder/userfiles/files/rizikerugesubu.pdfIn PDF document text
- http://choinka4x4.org/cms/files/file/jabanujimujubuxi.pdfIn PDF document text
- https://xo-sound.ru/userfiles/file/99317400798.pdfIn PDF document text
- http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160820e34aeab8---48944287043.pdfIn PDF document text
- http://arserwood.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210506020149691534yihg29.pdfIn PDF document text
- https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609f0b4250d31---39268499220.pdfIn PDF document text
- http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b99ca0a45c9---76293681096.pdfIn PDF document text
- https://www.gasserbush.com/wp-content/plugins/super-forms/uploads/php/files/1c8aa3779927c908210f41434987056c/sudodilu.pdfIn PDF document text
- https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160dbe1872474c---tupokudukevewuxopewaso.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=animals+eat+both+plants+and+meatPDF 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_off0000fb21.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB21 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00011333.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11333 | 17620 bytes |
SHA-256: 17ff31bc647bd1868cc407f8a5e42b89f02e137b8469510a7b78447347af5e79 |
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font_02_sfnt_off00014153.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14153 | 10680 bytes |
SHA-256: 2f8182996df4cd308f8cd717b875b8d2c643577740eea8958c19c48724f01acb |
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