MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and numerous URLs, many of which point to compromised or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is designed as a link farm, likely to redirect users to malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
Heuristics 7
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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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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://crewmak.ru/uplcv?utm_term=android+clone+app+to+new+phone PDF link annotation
- http://mfcpavpos.ru/file/19424126260.pdfIn PDF document text
- http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131d6ac79926---xeluzipafapamadov.pdfIn PDF document text
- http://www.smartusb.info/images/library/File/47890049765.pdfIn PDF document text
- http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144951c129ee---37829670700.pdfIn PDF document text
- https://indoshaolinkungfusociety.com/ckfinder/userfiles/files/paxiko.pdfIn PDF document text
- http://hermandadperdon.es/userfiles/file/67198365876.pdfIn PDF document text
- http://cloudinfo01.smartevolve.com/images/ckeditor/files/rivitolexub.pdfIn PDF document text
- http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143d97d9dd37---gawonevuxotajovuwogerojuw.pdfIn PDF document text
- http://graphicyazd.com/ckfinder/userfiles/files/pejifukodedikuzolo.pdfIn PDF document text
- http://vizugy.hu/uploads/files/wivikimifasudofaxig.pdfIn PDF document text
- https://middletonchambers.com/ckfinder/userfiles/files/14687840495.pdfIn PDF document text
- https://pensionradvanice.cz/res/file/52118022685.pdfIn PDF document text
- http://autoscuolemontagna.it/userfiles/files/toson.pdfIn PDF document text
- http://testplanet.nl/uploads/files/noseguxa.pdfIn PDF document text
- https://damsindia.org/admin/uploads/file/49608092692.pdfIn PDF document text
- https://petribax.nl/userfiles/file/mitibixukuxenupakor.pdfIn PDF document text
- https://nisahanpin.com/calisma2/files/uploads/89826865697.pdfIn PDF document text
- https://aymexco.eu/ckfinder/userfiles/files/zeradukunelo.pdfIn PDF document text
- http://sz-nuoyi.com/Upload/file/2021091808494410323.pdfIn PDF document text
- http://ahkjt.com/upfile/file/16440786139.pdfIn PDF document text
- https://keiba-like.biz/js/ckfinder/userfiles/files/87123367151.pdfIn PDF document text
- https://www.posluh.hr/ckfinder/userfiles/files/kepako.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_off0000efe0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFE0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off000107f7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107F7 | 10512 bytes |
SHA-256: 55f41ce2921ce51b576df11037c9c7232c09a55fafe46e26ce63f9269e76522f |
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font_02_sfnt_off00011fd6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11FD6 | 17844 bytes |
SHA-256: 00c3bf03f92797502589a456bf691888e52f6725ab364a5a59e1ef020e83182e |
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