MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs, many pointing to compromised websites or disposable domains, indicating a link farm designed to lure users to potentially malicious content. The ML classifier and ClamAV detection strongly suggest a phishing or trojan payload delivery. The presence of multiple external URIs and link farm heuristics confirms the malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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://infrive.ru/uplcv?utm_term=top+games+under+50+mb PDF link annotation
- http://haliburtonhighlandsheritage.ca/userfiles/file/34573238552.pdfIn PDF document text
- https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/61779383eae477298eecedb482fa665b/tapefuzomig.pdfIn PDF document text
- http://www.mustwalge.ee/data/content/files/fupijafini.pdfIn PDF document text
- http://elskup.pl/images/assets/file/nobanixokexipi.pdfIn PDF document text
- http://starwindows.ie/ckfinder/userfiles/files/togogekepoke.pdfIn PDF document text
- http://tjsijiqing.com/ckfinder/userfiles/files/2021/0901/6ccfa19f652b93f320d4be5fff584fc1.pdfIn PDF document text
- http://chaodontuonglai.vn/uploads/ck_upload/files/logojow.pdfIn PDF document text
- http://kryotherapie.net/neu/userfiles/file/49148279538.pdfIn PDF document text
- http://inggeo.eu/userfiles/files/memakavokirevi.pdfIn PDF document text
- http://tajesink.com/Uploadfiles/files/lerizolalitapisitoriv.pdfIn PDF document text
- http://retailpark.bg/uploads/wysiwyg/files/9119486616.pdfIn PDF document text
- https://chowdhurytourism.com/ckfinder/userfiles/files/66424786671.pdfIn PDF document text
- http://ubytovani-budejovice.cz/picture/vtextu/file/sebagexadez.pdfIn PDF document text
- http://devveb.net/userfiles/file/43166955353.pdfIn PDF document text
- http://www.patriarca-batiment.com/ressource/site-image/files/sidevomoritow.pdfIn PDF document text
- http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/e1d68d5253d8dcadac11e270dfaef347/soxevem.pdfIn PDF document text
- http://gespk.com/userfiles/file/sigika.pdfIn PDF document text
- https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/16140a16ccaa2f---buluzawiraziridaniv.pdfIn PDF document text
- http://inbond-cn.com/userfiles/file/22630422405.pdfIn PDF document text
- http://bigbazar.cz/is/images/FCKeditor/File/57750825741.pdfIn PDF document text
- http://ranaghatpchsschool.org/userfiles/file/deruwowor.pdfIn PDF document text
- http://japanbizkorea.com/userData/ebizro_board/file/72320908262.pdfIn PDF document text
- http://fujieshubao.com/zk/UploadFile/file/2021090522334573499.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_off0000d998.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD998 | 17624 bytes |
SHA-256: af2190c21639d5d574feee220d7f1bcc5b6bb53facc09597b40253e8b35598ac |
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font_01_sfnt_off000106ea.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x106EA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011f01.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F01 | 10956 bytes |
SHA-256: 5df0600174a812da0c6c41e43f436ef1a7c2a8fecc8bd90171c7066508a8efd1 |
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