MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to compromised CMS upload directories or disposable hosting, suggesting it functions as a link farm. These links likely lead to phishing sites or further malware downloads, aligning with a spearphishing attachment attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://ketchas.ru/uplcv?utm_term=moviesda+karnan+2021 PDF link annotation
- https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161454cf2bf227---47879639914.pdfIn PDF document text
- http://interel-rus.ru/test/sites/default/files/file/sawuwuwebijitim.pdfIn PDF document text
- http://vizugy.hu/uploads/files/files/21266589405.pdfIn PDF document text
- http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614061b47b218---lozuzofe.pdfIn PDF document text
- https://valubil.com/public/uploads/cms_file/cms_files/sirireroget.pdfIn PDF document text
- https://educhina.mn/editor/files/79921394658.pdfIn PDF document text
- https://gabinetpro.pl/kosmetyczka/krakow/files/fosorage.pdfIn PDF document text
- https://appvid.eus/userfiles/files/pujofokogirepabesubixa.pdfIn PDF document text
- https://alusol-kw.com/ckfinder/userfiles/files/vonorawoxamuvaponumi.pdfIn PDF document text
- http://chickenwild.com/upload/contents/images/images/xukoxugodolapefikap.pdfIn PDF document text
- http://thevalleytrader.com/files/perewofifusaxejozexasi.pdfIn PDF document text
- https://zakarpattya-tour.com/upload/kinorokijefe.pdfIn PDF document text
- http://nagymester.com/userfiles/file/dedukoxutazonobazisojezub.pdfIn PDF document text
- http://xn--80aaaaaikdebj9ccf1ayja1b5a3q.xn--p1ai/ckfinder/userfiles/files/fotuziwegepaxuripodejoxo.pdfIn PDF document text
- http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/1614289aa38f57---73755408098.pdfIn PDF document text
- http://atya.eu/files/file/zawosimorasowixakok.pdfIn PDF document text
- http://vecsecity.info/editor_up/rororabisovuwisagigaza.pdfIn PDF document text
- http://mgtofubbq.com/uploads/files/ligubekijole.pdfIn PDF document text
- http://cimkezes.hu/uploads/ckfinder/userfiles/files/diwigirifoze.pdfIn PDF document text
- http://www.biharikft.hu/bihari-admin/ckfinder/userfiles/files/fipojovivujilegivubil.pdfIn PDF document text
- http://systemsbiology.at/uploads/assets/file/nakosejaxopesogum.pdfIn PDF document text
- http://zjnep.com/ckeditor/ckfinder/userfiles/files/37520142657.pdfIn PDF document text
- http://lyshiying.com/d/files/94875046212.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_off0000bd0f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBD0F | 16304 bytes |
SHA-256: 5981a252036730cdec9488c6256efeccb15ff0906add32db262bea130744d241 |
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font_01_sfnt_off0000e71e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE71E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000ff35.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF35 | 10544 bytes |
SHA-256: 2c95c52036353b562405e8fdbade5d80ba2d2bb7d8cbc0a882620b582084d145 |
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