MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs that function as a link farm, directing users to potentially malicious websites. Several of these URLs point to compromised CMS upload directories, indicating a tactic to host malicious content on seemingly legitimate but compromised infrastructure. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 5
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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=my+hero+academia+all+movies+in+order PDF link annotation
- http://prodottoitalia.eu/userfiles/files/kuwoduturitafelukamiko.pdfIn PDF document text
- http://tsg-vaganovskoe.ru/ckfinder/userfiles/files/setokamesunikugobe.pdfIn PDF document text
- https://hatinhjobs.com/upload/files/figijijibogo.pdfIn PDF document text
- https://triangle-electronics.com/assets/userfiles/file/tikorililoxi.pdfIn PDF document text
- http://tayles.com/uploaded/86015229305.pdfIn PDF document text
- http://grabnerestriche.at/12181807033.pdfIn PDF document text
- http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613253c6970ff---66661682999.pdfIn PDF document text
- http://hoangduy.vn/vn/files/jekibimiliwumufup.pdfIn PDF document text
- http://jjc-dev.com/userfiles/file/xorofob.pdfIn PDF document text
- http://eternoohydro.com/d/files/pulejibulinofekileb.pdfIn PDF document text
- https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ecfc0cfffc---61313310524.pdfIn PDF document text
- http://coumert.com/images/file/disadoroveri.pdfIn PDF document text
- http://syntra.pl/userfiles/file/mewafamunelapome.pdfIn PDF document text
- https://gdaniec.com/upload/files/66549399434.pdfIn PDF document text
- https://maintogelonline2.bet/contents/files/67767052787.pdfIn PDF document text
- http://burragebrothers.net/demo/jolie/beta/userfiles/files/zosafadines.pdfIn PDF document text
- http://leprofit.ee/cmsfile/contentfiles/xiraxile.pdfIn PDF document text
- https://andana.us/files/files/nopilib.pdfIn PDF document text
- http://www.gobarging.com/uploads/textareas/file/pulonosibudivujutaja.pdfIn PDF document text
- https://nevisnews.com/userfiles/duwaf.pdfIn PDF document text
- http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/1612f2185b2c4c---56162688687.pdfIn PDF document text
- http://aow.infogestnet.it/ckfinder/userfiles/files/nurugugiverutujejumeruf.pdfIn PDF document text
- http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137e319c5341---11220574043.pdfIn PDF document text
- http://status-go.net/gfx/userfiles/files/70021911198.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_off0000bb5a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBB5A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d36c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD36C | 16616 bytes |
SHA-256: 467a53853fc4ca3fc4945abd8866ca6e64f5ea74f295a23d35062edc533ddd1a |
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font_02_sfnt_off0000fdd8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDD8 | 10708 bytes |
SHA-256: 76d8afbaa7fc102f4266a391a38ee21a898fbee1a1dc4eef118730fc7709c05e |
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