MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file identified as malicious by ML classifiers and ClamAV. It contains numerous embedded URLs, many of which point to compromised websites or are structured as link farms, suggesting a phishing or malware distribution attempt. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM indicates a pattern of using disposable hosting for these links, further supporting a malicious intent.
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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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://wastran.ru/uplcv?utm_term=latest+amapiano+songs+2020+mp3+download PDF link annotation
- http://klubalfa.org/img/userfiles/file/simawonufipuxok.pdfIn PDF document text
- http://17njl.com/userfiles/files/63170824090.pdfIn PDF document text
- http://www.cerathai.com/image/upload/File/gotizepa.pdfIn PDF document text
- http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a69a2c1192---12819447532.pdfIn PDF document text
- https://ringid.vn/ckfinder/userfiles/files/15696690522.pdfIn PDF document text
- https://webmakler.org/userfiles/file/55124845328.pdfIn PDF document text
- http://chikatere.com/Upload/files/85851584704.pdfIn PDF document text
- http://miraesusan.com/ckupload/files/25741106719.pdfIn PDF document text
- https://goldenlinejsc.com/userfiles/file/loxokufogi.pdfIn PDF document text
- http://waterlootour.com/FileData/ckfinder/files/20210908_5E653879DE357B28.pdfIn PDF document text
- https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613a85108b98d---jodoxufipat.pdfIn PDF document text
- http://flapboxes.custompackageboxes.com/userfiles/files/falebulefuxaxalewo.pdfIn PDF document text
- https://anup.bo/images/files/zigevamitugofi.pdfIn PDF document text
- http://www.cafeinca.com/img/public/contenido/file/zowokebiwafovetoj.pdfIn PDF document text
- http://tano-cable.com/d/files/26782792824.pdfIn PDF document text
- http://hosungtour.com/FileData/ckfinder/files/20210907_A23A7819D78A127F.pdfIn PDF document text
- https://partnermind.cz/images/files/teserozagumaluwupusepobex.pdfIn PDF document text
- http://longarmquiltingacadamy.com/fckeditor/userfiles/file/554931554.pdfIn PDF document text
- https://nawaasha.org/userfiles/file/94065695193.pdfIn PDF document text
- https://profesa.net/userFilesfile/zijox.pdfIn PDF document text
- http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613909b340074---51914647554.pdfIn PDF document text
- https://karlholmbygg.se/UserFiles/files/32926451744.pdfIn PDF document text
- http://otevrel.eu/ckfinder/userfiles/files/xuxepe.pdfIn PDF document text
- http://gu-bo.cn/uploads/files/xemekonuzidig.pdfIn PDF document text
- http://ccsctda.com/ckfinder/userfiles/files/20210905_103854.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_off0000b544.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB544 | 15732 bytes |
SHA-256: 8f7cbe0ffd877abb2735a8dee5accb2ebbcc4eba43718178172eafa85d1c55ea |
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font_01_sfnt_off0000dd80.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD80 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f597.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF597 | 11092 bytes |
SHA-256: 5baa679e6ad2aa92e61d44aca7375f0bd5f80da8ac17464e8d9b02e4c6cfc9e2 |
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