MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF sample was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier, indicating malicious intent. It contains a link farm with numerous external URIs, many pointing to compromised or disposable hosting, suggesting a phishing or malware distribution scheme. The presence of an embedded JavaScript stream further supports the possibility of malicious code execution within the PDF.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://cructi.ru/uplcv?utm_term=most+famous+photographs+in+history
- https://xlquality.com/userfiles/file/40870208570.pdf
- http://nontaromclinic.com/ckfinder/userfiles/files/lopefam.pdf
- https://tahuacoop.com/cms_gpadmin2015/sgi_userfiles/userfiles/files/14387337382.pdf
- http://directartdeal.com/uploaded_files/userfiles/files/5358958129.pdf
- https://datawire.gr/files/files/tikavusikexojejem.pdf
- http://battlegrouponline.com/app/webroot/js/ckfinder/userfiles/files/kudasewinetevabuk.pdf
- http://royalgoodviewresort.com/Uploads/file/27606029133.pdf
- http://hlqh.net/userfiles/file/20210904230355_1674742315.pdf
- https://kimcert.com/E/file/41585100230.pdf
- http://gleb777.com/fck_upload/file/10887490621.pdf
- http://sbs-group.co/userfiles/files/6765806931.pdf
- https://valve-toho.com/userfiles/file/wijonetubizimejo.pdf
- https://susta.vn/userfiles/file/78364254387.pdf
- https://fallsplat.se/bildbank/file/90707745071.pdf
- http://111-orte.de/testarea/cwsCMSlight/media/files/vatibavalabavaxitip.pdf
- http://phrabat.net/UserFiles/File/wevadarafutesoda.pdf
- https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16132ef2805c37---54150973819.pdf
- http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16140bedf65f36---46026172785.pdf
- https://wolfgang-photography.com/userfiles/files/55667929902.pdf
- https://shoppingplanet.ro/ckfinder/userfiles/files/42724001302.pdf
- http://seanmore.com/userData/board/file/12063819214.pdf
- https://liantoong.com/archive/upload/files/39331672341.pdf
- http://germainelecocq.it/userfiles/files/pudisazagolumisa.pdf
- https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/dbea2c7416691c2a5d6697886c485922/87925605101.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f6c6.binca86134494001c1260e3772a290bc15469f300ba74ae582449eca928103e9dfc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF6C6 | 20272 bytes |
font_01_sfnt_off00012be7.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12BE7 | 16792 bytes |
font_02_sfnt_off000143fe.binf7be4c10ccdd993b9b14296a7e4cd4e5f9f2b41124acbba3aadaf7292b2f5337 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x143FE | 10832 bytes |
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