MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is a PDF that has been identified as malicious by ML classifiers and ClamAV. It contains numerous embedded links to other PDFs, suggesting it is part of a link farm designed to distribute malware. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_URI heuristics, along with the ClamAV detection of 'Pdf.Phishing.Trojan', indicates a phishing or malware distribution attempt. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure and heuristics point to a malicious distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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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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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QR-code redirect lure medium SE_QR_LUREDocument instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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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://lohoithaiduong.com/uploads/files/gusesitupa.pdf In PDF document text
- https://pezenasenchantee.fr/userfiles/file/26240276834.pdfIn PDF document text
- http://kccmaul.com/files/files/74691886009.pdfIn PDF document text
- http://kennycojewelry.com/userfiles/files/202109/1630851547.pdfIn PDF document text
- http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f3edcbdbdf---28902052391.pdfIn PDF document text
- https://artinterior.bg/userfiles/file/jewujomonamagikafi.pdfIn PDF document text
- http://thietbikhachsanvinhhung1.com/upload/files/75216537298.pdfIn PDF document text
- http://botosani.ro/img/uploads/file/jukafebuj.pdfIn PDF document text
- http://www.musicboxpiano.com/contentfiles/76674317730.pdfIn PDF document text
- http://toyteepee.com/uploadfiles/file/210902065746105056vcnkf9.pdfIn PDF document text
- https://winpoasia.com/ckfinder/userfiles/files/buxasirarozavebi.pdfIn PDF document text
- https://clicksnepal.grnca.org/img/files/files/dukenogukejoxogaf.pdfIn PDF document text
- https://biogenetixpharma.com/ci/userfiles/files/37564424963.pdfIn PDF document text
- https://eslms.com/userfiles/file/muxijiwokufozew.pdfIn PDF document text
- http://speednewslive24.com/assets/ckfinder/core/connector/php/uploads/files/8691229287.pdfIn PDF document text
- http://www.startservis.sk/novy/ckfinder/userfiles/files/60560624200.pdfIn PDF document text
- http://mijn-nederland.nl/userfiles/file/4145721228.pdfIn PDF document text
- http://vibestedu.com/_UploadFile/Images/file/68946685159.pdfIn PDF document text
- http://tecs4.com/intranet/ckfinder/userfiles/files/nifirekid.pdfIn PDF document text
- https://resortweeks.pro/userfiles/file/dugajapafasivolizomino.pdfIn PDF document text
- http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137853ba6c61---zokiriwixodobi.pdfIn PDF document text
- http://neteyes.eu/editor_up/wexexabogexegiwogimimusu.pdfIn PDF document text
- http://style4.allwebeasy.com/userfiles/files/26994660926.pdfIn PDF document text
- https://acrgruppe.de/userfiles/file/89059897587.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=control+center+for+edge+panel+apkPDF 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_off0000e7f3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7F3 | 10660 bytes |
SHA-256: fa373f794663d05cb8c73215175708f0081f970c75ddd3bab5714091e236c670 |
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font_01_sfnt_off00010051.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10051 | 19456 bytes |
SHA-256: c7218b3df9a110b5d06e7563350ad0790369851ba66048c2f788df529555de7c |
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font_02_sfnt_off000133bd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x133BD | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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