MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous embedded URLs, many pointing to PDF files on various domains, suggesting a link farm or distribution network. One heuristic specifically identifies it as a link farm on disposable hosting, with a UTM term redirector, indicating a deceptive purpose.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 5
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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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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 http://dabaizhongxue.com/upload_fck/file/2021-9-6/20210906155717352019.pdf In PDF document text
- http://astorandblack.net/emailer/userfiles/file/39795580365.pdfIn PDF document text
- https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16135bb5bdc26c---siwilevediwexuzusug.pdfIn PDF document text
- https://arab-hams.com/Ups/files/98908766723.pdfIn PDF document text
- http://gzlmjx.com/data/home/bxu2343160066/htdocs/uploadfile/files/zuvutuvabatinulujas.pdfIn PDF document text
- http://geoodwierty.pl/files/file/999854167.pdfIn PDF document text
- https://sterlingsez.com/ckfinder/userfiles/files/56391276036.pdfIn PDF document text
- https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/6e74a83b20370494a1d7129189fe5834/32772670307.pdfIn PDF document text
- https://sarenpinler.com/calisma2/files/uploads/70348072747.pdfIn PDF document text
- http://hongshengfish.com/uploadfiles/2021090504081867224.pdfIn PDF document text
- http://studiolegaletrotta.eu/userfiles/files/denenumamipafa.pdfIn PDF document text
- http://cansuyu.org/resimler/files/63445991794.pdfIn PDF document text
- http://vector-mebel.ru/uploads/files/defanetofagizopo.pdfIn PDF document text
- http://highdeal.linkeo.net/ckfinder/userfiles/files/lilatuvozotekix.pdfIn PDF document text
- http://shinies.ru/img/lib/file/zodukanugijerakititi.pdfIn PDF document text
- http://happy-land.hu/editor_up/66302852095.pdfIn PDF document text
- http://sweed-trans.eu/ckfinder/userfiles/files/kisutapogugutilo.pdfIn PDF document text
- http://logicamail.it/draft/media/rajakike.pdfIn PDF document text
- https://ckmusicdesign.nl/userfiles/file/21816561694.pdfIn PDF document text
- http://sportingfoundation.com/uploads/file/22963449844.pdfIn PDF document text
- http://demkapi.com/resimler/files/96277154547.pdfIn PDF document text
- http://sport-zavora.cz/data/file/kubodifenonetebuj.pdfIn PDF document text
- http://xn--dlek-5qa.com/admin/UserFiles/file/mevefosisoxujidakakifevi.pdfIn PDF document text
- https://easresidence.ro/app/webroot/files/userfiles/files/toxobiwapujaxujelaf.pdfIn PDF document text
- http://aksaaydinlatma.com/img/editor/image/file/kudete.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=dynamic+page+vs+static+pagePDF 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_off0000be80.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBE80 | 16036 bytes |
SHA-256: 8a43545065c6615ae1695f3353dd8dd1786a5c6747f9609633e2c616cdb023c6 |
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font_01_sfnt_off0000e7fe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7FE | 10632 bytes |
SHA-256: cec968218f00d3ad38199590d59cba94495c225479b6c1870b060113a729b609 |
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font_02_sfnt_off00010067.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10067 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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