MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs, many of which point to compromised CMS upload directories, suggesting a link farm designed to distribute malicious content or phish users. The document body is unreadable binary data, providing no direct content clues.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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://luathoanghuy.com/uploads/files/vosijewiwomida.pdf In PDF document text
- http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/e191ae7faa9b43bde78aaa26b4ff835e/9923345057.pdfIn PDF document text
- https://mls.lighting/wp-content/plugins/super-forms/uploads/php/files/fcdf724191a7f621ffda420533a34a6e/20980752001.pdfIn PDF document text
- http://vdadanang.vn/app/webroot/assets/files/xezutitubamiditi.pdfIn PDF document text
- http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608b3553acfd1---91521219804.pdfIn PDF document text
- http://russia-ex.com/98121801504.pdfIn PDF document text
- http://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/16098bd8840405---54821446293.pdfIn PDF document text
- https://mimpiindah1.com/contents//files/58850100807.pdfIn PDF document text
- http://apsencollege.org/test/fckeditor/file/95528993266.pdfIn PDF document text
- https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/16d335ec5e2544fe91aa78fd4b97809c/88750471811.pdfIn PDF document text
- http://alnadaoil.com/userfiles/file/xebaxijaladegizasadofuwa.pdfIn PDF document text
- http://bsl-trans.ru/admin/ckfinder/userfiles/files/14330594372.pdfIn PDF document text
- http://happypalettebnb.com/CKEdit/upload/files/xuliga.pdfIn PDF document text
- http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a9fa36b7637---wugalosijumusexajijazesut.pdfIn PDF document text
- https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c8e8e124f30---98918419260.pdfIn PDF document text
- https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/218cfbcc3e4a92786c5c53bf4b626ed2/29112049987.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=drawing+a+scatter+plotPDF 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_off0000e116.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE116 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f92d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF92D | 10636 bytes |
SHA-256: f65bac768a0c26c720a69eb3fbe491e9022ce86ca0bb297aca6898cad1f7670b |
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font_02_sfnt_off000111b0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111B0 | 18564 bytes |
SHA-256: 2336aa9ef9e35262312561d7fd3591b7bd7bc52150a3f64626aa12c6ab35ba6d |
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