MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate the document functions as a link farm, directing users to multiple compromised or disposable hosting sites. The presence of numerous unknown URLs suggests an attempt to distribute malicious content or conduct phishing operations.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://aadharshilaschool.org/userfiles/file/28532316997.pdf In PDF document text
- http://jarosi.hu/files/file/zumotobo.pdfIn PDF document text
- http://www.kizkulesikizogrenciyurdu.com/public/ckfinderuploads/files/dikumuloxinasejelidoxewa.pdfIn PDF document text
- https://iphastkala.com/userfiles/file/36656992053.pdfIn PDF document text
- http://language-coach.pl/uploads/files/gudiditomopelefijedosaga.pdfIn PDF document text
- https://luminex.pl/upload/file/retenowazorokotitu.pdfIn PDF document text
- http://baihsad.com/userfiles/files/20210907_151047.pdfIn PDF document text
- http://innovatepc.com/userfiles/file/65366754321.pdfIn PDF document text
- https://betalinktech.com/blmedia/file/jizug.pdfIn PDF document text
- https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/560a3ad5263c6d9f92eb40ec8b67626b/57006076691.pdfIn PDF document text
- http://bulmarconsult.com/files/mukajedubogebajapexiborax.pdfIn PDF document text
- http://www.radeton-cz.vasestranky.cz/ckfinder/userfiles/files/legunowogorodiko.pdfIn PDF document text
- http://buyyoutubesubscribers.com/ci/userfiles/files/divujexo.pdfIn PDF document text
- http://paulgraphics.paulsfashion.in/files/bemavexasilavawodozudal.pdfIn PDF document text
- http://ccforum.kr/uploads/file/1630838870.pdfIn PDF document text
- http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/161376dc1de6c3---40099584227.pdfIn PDF document text
- https://thaibamboorestaurant.ca/phpsites/bard_ford/uploads/file/74315994812.pdfIn PDF document text
- http://thinhhoanggia.vn/Images_upload/files/noropowu.pdfIn PDF document text
- http://thienanglass.vn/upload/files/zobujidafol.pdfIn PDF document text
- http://bluebirdcanada.com/FileData/ckfinder/files/20210908_9AECA5368FEA846B.pdfIn PDF document text
- https://kopari.hu/files/file/risodunitosup.pdfIn PDF document text
- http://yeosingol.com/FileData/ckfinder/files/20210908_5FCF70A807B344FF.pdfIn PDF document text
- http://osteriailgalloelinnamorata.com/userfiles/files/fobajurijemibeg.pdfIn PDF document text
- https://mihalex.by/files/files/98477841987.pdfIn PDF document text
- http://morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/161307c0e0c0c9---vofabujasowew.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=internal+audio+rootPDF 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_off0000eb51.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB51 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00010368.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10368 | 10124 bytes |
SHA-256: b84643a324967e9cdc26d3be9303e6485ea5e1c5edc9484943c5553a82ed60c2 |
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font_02_sfnt_off00011a0b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A0B | 19612 bytes |
SHA-256: 2aef47959c088799c72ddd82bfe35100b32295e02d5613a3c5419eb706fc620f |
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