MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan. It contains embedded JavaScript and numerous external URIs, many of which point to compromised websites or disposable hosting, suggesting a link farm or phishing lure. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 7
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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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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://synerhu.ru/uplcv?utm_term=android+splash+activity PDF link annotation
- http://chuaphucluong.com/uploads/image/files/lesuxiritajozevowux.pdfIn PDF document text
- http://koszyczarek.pl/userfiles/file/magumulagosususo.pdfIn PDF document text
- http://knshzj.com/CKEdit/upload/files/44939557466.pdfIn PDF document text
- http://scouttautomotive.com/editor_uploads/system/files/51916228867.pdfIn PDF document text
- https://sunnyrosesschool.com/userfiles/file/fumirifesowasi.pdfIn PDF document text
- http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147f220d2b33---21381919659.pdfIn PDF document text
- https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/464df0c1d1e3c45161babe960172179f/rofesuja.pdfIn PDF document text
- https://ikuseikyokai.jp/ckmedia/files/larejotabisusizejoxuji.pdfIn PDF document text
- http://kimwendelldesign.com/ckfinder/userfiles/files/79838895846.pdfIn PDF document text
- https://zivotzaokny.eu/res/file/zuvepufusevufiwivi.pdfIn PDF document text
- http://livelyway.com/ckfinder/userfiles/files/50801115480.pdfIn PDF document text
- https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16132cb181af79---8996871349.pdfIn PDF document text
- http://gaishachuukobuhin.com/js/upload/files/tosinatinajujif.pdfIn PDF document text
- http://mayinmaunhat.com/upload/files/gipave.pdfIn PDF document text
- http://cbstav.cz/file/rupejadip.pdfIn PDF document text
- http://jiuxingchaoshi.com/uploads/file/081816425102.pdfIn PDF document text
- https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/5ce7a7jfv9auh8f8dh0956gmf5/11214716788.pdfIn PDF document text
- http://archifolder.com/userfiles/files/82755627898.pdfIn PDF document text
- http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/16149613f8f756---xikakemekitubetero.pdfIn PDF document text
- http://www.texaco.bargiel.com.pl/ckfinder/userfiles/files/19809610490.pdfIn PDF document text
- http://preiswerte-unterkunft-papenburg.de/mediapool/99776782735.pdfIn PDF document text
- https://tidaksusah.com/contents/files/59265674155.pdfIn PDF document text
- http://nacyc.jp/Upload/file/56421517755.pdfIn PDF document text
- 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_off0000b0a6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB0A6 | 10640 bytes |
SHA-256: 2e675482cf223c022bdb0623d1120c18f9b53c2e9f6611b25bdc73fdd697b123 |
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font_01_sfnt_off0000c8f6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC8F6 | 16892 bytes |
SHA-256: 4d70e2cc574b854cc6fe331307f2c0b5e31b75532b77971e7a60f3d3451ed79b |
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font_02_sfnt_off0000f4a3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4A3 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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