MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple external URLs hosted on potentially compromised or disposable domains, such as 'synerhu.ru' and 'dentalcenterstudio.it'. The presence of 'utm_term' parameters suggests an attempt to track user engagement, common in phishing or malware distribution campaigns.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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://synerhu.ru/uplcv?utm_term=dangbei+apk+for+firestick PDF link annotation
- http://dentalcenterstudio.it/userfiles/files/75680772412.pdfIn PDF document text
- http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a7b925d825---gidipazipezogoz.pdfIn PDF document text
- https://orig-shop-gsm.ro/ckfinder/userfiles/files/fazatavunamamanoni.pdfIn PDF document text
- http://chamdure.com/DATA/files/xituj.pdfIn PDF document text
- https://www.koreayokogawa.com/ckfinder/userfiles/files/levujatadamofanomadizumis.pdfIn PDF document text
- https://kede.org/userfiles/file/36739804211.pdfIn PDF document text
- http://dangkykinhdoanhkiengiang.com/upload/ck/files/14122572415.pdfIn PDF document text
- http://tele-klass.ru/i/upload/files/3532836511.pdfIn PDF document text
- http://hum-lucknow.org/test/fckeditor/file/71105631132.pdfIn PDF document text
- https://honghow.com/ckfinder/userfiles/files/39101125124.pdfIn PDF document text
- https://raljob.com/userfiles/file/97119412671.pdfIn PDF document text
- http://ylplj.com/ckfinder/userfiles/files/woxomunodikikakidiruga.pdfIn PDF document text
- http://mentor-tutor.com/newGroserLikeProject/uploads/files/26612496122.pdfIn PDF document text
- https://discovery99.com/userfiles/file/59181951657.pdfIn PDF document text
- http://baracenter.be/userfiles/file/79733537623.pdfIn PDF document text
- http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613172a6ba529---85923214233.pdfIn PDF document text
- http://motivationandmomentum.net/ci/userfiles/files/kamoraxutadubegutixebonel.pdfIn PDF document text
- http://myphamso1.net/uploads/files/8271896735.pdfIn PDF document text
- http://yugreat.com/filespath/files/20210902121125.pdfIn PDF document text
- https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1614298ae0b74c---pusapati.pdfIn PDF document text
- http://bonezi.morefriendship.com/upload/files/46354227450.pdfIn PDF document text
- http://vibrobeton.by/pics/files/keruxibububajibojunivi.pdfIn PDF document text
- http://ned.ru/uploads/files/16898421029.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_off0000d982.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD982 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f194.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF194 | 18772 bytes |
SHA-256: 4db1748ca6e7beb0405aab02567160e01e687d665e7e1a09c04250f380380acd |
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font_02_sfnt_off00012260.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12260 | 10840 bytes |
SHA-256: e8db2c9e04c5a6336cffb4e402ec90071358ab6664985be2d739871931598392 |
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