MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample is a PDF file identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs pointing to external sites, many of which are hosted on compromised or disposable domains. The presence of 'utm_term' parameters suggests an attempt to track user interactions, common in phishing or SEO-based malware distribution schemes.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://irlanc.ru/uplcv?utm_term=samsung+note+8+custom+rom+android+10 PDF link annotation
- http://kooijobs.in/ckfinder/userfiles/files/xinowolegoxumibof.pdfIn PDF document text
- http://hacoauto.vn/upload/files/gerizegatej.pdfIn PDF document text
- http://coquicart.com/ckeditor/ckfinder/core/connector/php/uploads/files/zovimegoj.pdfIn PDF document text
- http://aydinservis.com/ckfinder/userfiles/files/66600956268.pdfIn PDF document text
- http://www.onlinenieuwsbriefversturen.nl/gebruikers/afbeeldingen/23902966972.pdfIn PDF document text
- http://manpukulivermore.com/uploads/files/bobomojibixilus.pdfIn PDF document text
- https://melnikhouse.com/userfiles/file/93171951433.pdfIn PDF document text
- https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/6543ce2a36167a0e12822bdf188d6304/duzipibotizubusuf.pdfIn PDF document text
- https://maytinhdalat.vn/images/uploads/files/44337466811.pdfIn PDF document text
- http://luatsugiadinhviet.com/upload/ck/files/fowejojovokomirusum.pdfIn PDF document text
- https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/sd9nnk31fhgbpqqton2k3hb6ul/forarabiropomawo.pdfIn PDF document text
- http://huijingweb.com/upload_fck/file/2021-9-10/20210910180839203908.pdfIn PDF document text
- https://clearpatth.com/userfiles/file/pegoba.pdfIn PDF document text
- https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/uav7pcqsktldoevqqp38u6b74o/98392196580.pdfIn PDF document text
- http://riverla.vn/uploads/userfiles/file/lovekaziwotu.pdfIn PDF document text
- https://lexconsulting.ro/webroot/files/media/voxulaperotuwiv.pdfIn PDF document text
- http://jplus-ag.com/upload/files/BodyFile__614E93BEBEF41.pdfIn PDF document text
- http://uforoi.com/app/webroot/uploads/files/39037079701.pdfIn PDF document text
- http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c1bcdd93d0---91340475847.pdfIn PDF document text
- http://warwick-ems.org/userfiles/file/33002286669.pdfIn PDF document text
- http://innotec-industrie.be/userfiles/file/vezenowetupa.pdfIn PDF document text
- https://yuanfuconstruction.com/ckfinder/upload/files/4403635611.pdfIn PDF document text
- http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613b80880965e---62833030982.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_off0000ae9e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE9E | 11224 bytes |
SHA-256: 11b3303be167c8b34fc9ddc5b3e55cab3bd1256007239f6c24513f4519d424a5 |
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font_01_sfnt_off0000c8bd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC8BD | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e0cf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0CF | 14636 bytes |
SHA-256: 2af336c2cece6ebbd5e308e80568188f95ed2b2bc2843a0a9ece5b8d4ce0a2ab |
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