MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable domains, suggesting a link farm for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs and the nature of the links point towards a spearphishing attachment attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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://medvor.ru/uplcv?utm_term=biology+book+pdf+grade+11 PDF link annotation
- https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/214f547a17f37063bf5eaa1440dab311/funatada.pdfIn PDF document text
- http://zge-led.com/luodan/images/userfiles/file/48439408409.pdfIn PDF document text
- https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/aef604e7bbf2010a97318acdd6f5524c/didinezigupegaxet.pdfIn PDF document text
- http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079d2853348e---mebadesekakolekereven.pdfIn PDF document text
- http://latexindia.com/userfiles/file/vodofubu.pdfIn PDF document text
- http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16088533f428e5---23588650695.pdfIn PDF document text
- http://htk2.altrodesign.eu/ckfinder/userfiles/files/goxolaxakigelixik.pdfIn PDF document text
- https://bravo-hk.com/userfiles/file/posemuxosirereriselexoj.pdfIn PDF document text
- http://koreaseals.com/ckfinder/userfiles/files/2116186488.pdfIn PDF document text
- http://hotararicedo.ro/files/files/mexinodetaveb.pdfIn PDF document text
- http://bodemveenweiden.nl/bodem-veenweiden-img/2233504506.pdfIn PDF document text
- http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/160f735b4e9e3e---zevegune.pdfIn PDF document text
- http://telekommarketing.com/firme_data/files/64621687669.pdfIn PDF document text
- https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/b50021be4123fe06efe0ba824a058414/jigeri.pdfIn PDF document text
- https://medicinasolidale.org/wp-content/plugins/super-forms/uploads/php/files/20a23b09ce47bc7b07a34e4d85da7069/zerulegeburemadoxe.pdfIn PDF document text
- http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16077ca247dfe8---nixazokiropamowuzifubix.pdfIn PDF document text
- https://whitesal.com/data/images/file/8699_20210722225909.pdfIn PDF document text
- http://nct-vn.com/userfiles/file/vozutalinifono.pdfIn PDF document text
- http://marcth.pl/media/fck/file/3093286430.pdfIn PDF document text
- http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6671507383---wawufu.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_off0000e985.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE985 | 16720 bytes |
SHA-256: 5dc6f6745c36f13971c07537d6fa13ee546601db9bdaf817ebf16d61b0630f74 |
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font_01_sfnt_off00011521.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11521 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012d38.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12D38 | 10752 bytes |
SHA-256: 5c94b0d6f9497d44be024b3805e4cfac05f1898097cd380d9cbb8324b8fb0bb7 |
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