MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, and heuristics indicate it is a link farm designed to host PDF files. The 'SE_CALLBACK_LURE' heuristic specifically points to a callback phishing or tech-support scam pattern, suggesting the document's content is designed to trick the user into calling a fraudulent number. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a malicious intent to redirect users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://mayingiabao.com/upload/files/razedibeluf.pdf In PDF document text
- http://tuivaivietnam.com/uploads/files/xedufeluxirulelorub.pdfIn PDF document text
- http://jr-bang.com/uploadfiles/20210902063811.pdfIn PDF document text
- http://namlinhchivietnam.net/userfiles/image/file/32878869510.pdfIn PDF document text
- https://milorem-service.ru/userfiles/file/11756036287.pdfIn PDF document text
- http://mail.teleserviciomalaga.com/ckfinder/userfiles/files/zujomaj.pdfIn PDF document text
- https://digireg.lu/upload/kixepolipumixajava.pdfIn PDF document text
- http://cisseo.net/userfiles/files/bomimegevevaserun.pdfIn PDF document text
- http://kesifveotesi.com/files/5430427684.pdfIn PDF document text
- http://liceoadultos.juniorcollege.cl/userfiles/files/dujutimunulamowedo.pdfIn PDF document text
- http://risme.vn/files/wofasotavufo.pdfIn PDF document text
- http://fsanaq.com/upload/file/210902110940748886tgpoyg2kg0rm.pdfIn PDF document text
- https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1613ff8b98846b---94564616395.pdfIn PDF document text
- http://targhevaticane.it/userfiles/files/bitugutaj.pdfIn PDF document text
- http://ramenhajimetustin.com/uploads/files/jenegigakatadipunovegop.pdfIn PDF document text
- http://ceraunavoltapizzeria.it/userfiles/files/guzuwebomizukega.pdfIn PDF document text
- http://allier-genealogie.org/File:/tonupiwaramubokum.pdfIn PDF document text
- http://productinfo.in/konadnew/userfiles/file/xamukijalevomobuxalo.pdfIn PDF document text
- https://chongtham68.com/app/webroot/uploads/files/49717236097.pdfIn PDF document text
- http://combatkuntao.com/ckeditor/ckfinder/userfiles/files/bopexabuvij.pdfIn PDF document text
- https://www.leasing.net.in/ckfinder/userfiles/files/gubajo.pdfIn PDF document text
- https://dakotaterritorydevelopment.com/ckfinder/userfiles/files/fejipojad.pdfIn PDF document text
- http://arkystudio.eu/userfiles/files/38086576939.pdfIn PDF document text
- http://www.urbanwaterways.info/files/dolupaturunamogotevi.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=telecharger+emoji+iphone+pour+androidPDF 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_off0000c402.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC402 | 17344 bytes |
SHA-256: 4cf0e216592c337e44ada5c9e844fbfd12dcef7e6ba0e3126e26bc9ecd71048a |
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font_01_sfnt_off0000f112.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF112 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010929.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10929 | 10888 bytes |
SHA-256: 1e77c48a0451c5fa53d048bfb5e375f07580e4f98a23c1fc50c4c64dab2e17c3 |
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