MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating it likely exploits a vulnerability or serves as a phishing lure. The heuristics reveal it functions as a link farm, directing users to multiple compromised or disposable hosting sites, which is a common tactic for distributing malware or conducting phishing campaigns. The presence of numerous embedded URLs, many pointing to potentially compromised CMS uploads, reinforces this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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 http://backupcenters.com/userfiles/file/41561100699.pdf In PDF document text
- https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/e868f6bab3f93fa43f49b1b619384da3/8699070685.pdfIn PDF document text
- http://monteconsultants.com/image/upload/File/52179465062.pdfIn PDF document text
- http://ride-on-earth.com/images/blog/file/90461699158.pdfIn PDF document text
- https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/1614610a781ba7---98560279183.pdfIn PDF document text
- https://a-pointpro.com/cms/ckfinder/userfiles/files/vigajegabora.pdfIn PDF document text
- http://cctechlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wixivoka.pdfIn PDF document text
- https://dla-pracownika.pl/pliki_user/File/zudutukisaroneta.pdfIn PDF document text
- http://herium.net/FileData/ckfinder/files/20210916_6C32083CA2551502.pdfIn PDF document text
- http://www.biosafety.biz/ckfinder/userfiles/files/vavit.pdfIn PDF document text
- https://i-try.tw/upfile/files/2021/09/10/xigopipuw.pdfIn PDF document text
- https://ego-sofa.tw/uploads/files/202109181751238596.pdfIn PDF document text
- https://tlproduct.com/userfiles/file/wojokowotad.pdfIn PDF document text
- http://dellalontra.it/userfiles/files/86442792536.pdfIn PDF document text
- http://kpotplace.com/uploads/files/5332741499.pdfIn PDF document text
- https://baobiachau.com/luutru/files/48069220342.pdfIn PDF document text
- https://b7b.reviewz.eu/app/webroot/files/userfiles/files/lakosarunik.pdfIn PDF document text
- http://www.sas.edu.mn/ckfinder/userfiles/files/bivosurudus.pdfIn PDF document text
- http://herbwaterthailand.com/userfiles/files/wiladiwolev.pdfIn PDF document text
- https://etcbt.com/userfiles/file/foloseleki.pdfIn PDF document text
- http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142565dcc907---32880282281.pdfIn PDF document text
- https://5uempat.com/contents/files/4439650824.pdfIn PDF document text
- http://sm.ac.th/ckfinder/userfiles/files/nejepur.pdfIn PDF document text
- https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/78de9b30798970eca96f19100872c440/83840388191.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=lulubox+hack+gamePDF link annotation
- 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_off0000b7e4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB7E4 | 16000 bytes |
SHA-256: 8dbeef8d8f789cd27fea37db4b128d702190ca3e03cc905f5105f42714153630 |
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font_01_sfnt_off0000e104.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE104 | 10504 bytes |
SHA-256: 3107bf5509ba23de06f5fa0d050dccf03580885e4bff1d3a7830c3fca087dff8 |
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font_02_sfnt_off0000f8f8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8F8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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