MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm on disposable hosting, with numerous embedded URLs pointing to other PDF files. The primary URL, 'http://anshan56.cn/userfiles/file/16328996031098600114.pdf', is a key indicator of this distribution network.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
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://anshan56.cn/userfiles/file/16328996031098600114.pdf In PDF document text
- http://oishisushigd.com/uploads/files/zivawinotonetexozoziw.pdfIn PDF document text
- https://parfumzone.ro/files/file/rutobaxefujosezag.pdfIn PDF document text
- http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1614c9dc0e8afc---39727029307.pdfIn PDF document text
- http://portakalweb.net/home/portakal/public_html/ckfinder/userfiles/files/towenewig.pdfIn PDF document text
- https://homestayhoian.vn/uploads/image/files/872641701.pdfIn PDF document text
- https://stoneappeal.in/FCKeditor/file/zojujowunudafijawadukege.pdfIn PDF document text
- https://kebecelectrique.com/upload/editor/file/bolagedobinenexipiwusa.pdfIn PDF document text
- https://ivanda-commerce.hr/userfiles/file/bivabakovurorogovikagu.pdfIn PDF document text
- http://dhleisure.com/ckupload/files/migijepijowijog.pdfIn PDF document text
- http://ocean-ex.com/images/blog/file/fodikojirovi.pdfIn PDF document text
- https://stw-nowogard.pl/download/file/35460815677.pdfIn PDF document text
- http://gzmzwl.com/Uploadfiles/files/patifeg.pdfIn PDF document text
- http://dfanchem.com/upload/files/52617597918.pdfIn PDF document text
- http://expertworker.paraleumarian.ro/app/webroot/files/userfiles/files/59869987690.pdfIn PDF document text
- http://yonezawanet.jp/units/24250/zcycom/files/viwali.pdfIn PDF document text
- http://violetstudio.in/userfiles/file/woxidupirilenozepekuxuwe.pdfIn PDF document text
- https://markmont.eu/editor_uploads/system/files/duwarem.pdfIn PDF document text
- https://gad-elhak.com/userfiles/file/fafovonalumuvinenaliw.pdfIn PDF document text
- http://immobilieninvestors.de/userfiles/file/76572661304.pdfIn PDF document text
- http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140915a10829---nikivijagipojeta.pdfIn PDF document text
- http://datavincity.com/uploads/ckfinder/files/72435794092.pdfIn PDF document text
- http://citescolairedeledit.com/include/file/4040451290.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=motor+world+car+factory+apk+modPDF 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_off0000b30c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB30C | 16136 bytes |
SHA-256: adba9d300ac62aa7a0cc6e9192d817a32aac531b00dfa41f20d1fe3779948aaa |
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font_01_sfnt_off0000dc10.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC10 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f427.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF427 | 10572 bytes |
SHA-256: f63f0fed66b81770b0172359cd94c735de6ae52909b7152eb2ffcc3128d6fb0e |
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