MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a link farm pointing to potentially compromised websites. The PDF contains numerous external URIs, including one that appears to be a redirector with a search term, suggesting an attempt to lure users to malicious content. No scripts were extracted, but the overall structure and URL patterns are indicative of a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
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://queure.ru/uplcv?utm_term=halliday+resnick+11th+edition+pdf PDF link annotation
- http://www.ecrivains-consult.fr/easyonline/ckfinder/userfiles/files/22504479507.pdfIn PDF document text
- http://abpjse.news-read.com/upload/files/70936254198.pdfIn PDF document text
- http://varosom.hu/userfiles/files/71707775304.pdfIn PDF document text
- https://styliststudios.com/imagesTE/file/jaliguzu.pdfIn PDF document text
- https://deycaterers.com/ckfinder/userfiles/files/45394360605.pdfIn PDF document text
- https://immo-macedo.lu/userfiles/files/69144123595.pdfIn PDF document text
- http://erex.hu/upload/file/64203771170.pdfIn PDF document text
- http://akademibt.com/resimler/files/damekojubesesejexixim.pdfIn PDF document text
- https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/b1e3283e2c04060fb58918df01ba94bc/ninokowo.pdfIn PDF document text
- http://www.ruben.pl/ckfinder/userfiles/files/21180963955.pdfIn PDF document text
- http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613a0248c3e72---pupejulaj.pdfIn PDF document text
- http://kystar.net/filespath/files/20210913230720.pdfIn PDF document text
- http://appextskihjthj.handysociality.com/upload/files/40355290910.pdfIn PDF document text
- http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f975d92bd3---26024892996.pdfIn PDF document text
- http://oldmotorsclub.com/files/file/kizepexipubozi.pdfIn PDF document text
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1614d51dba8f3f---xobego.pdfIn PDF document text
- http://portableandcool.com/files/files/4792875475.pdfIn PDF document text
- https://ddnepal.com/assets/userfiles/files/pujuveno.pdfIn PDF document text
- http://citysoupsbellevue.com/uploads/files/xakakuwemi.pdfIn PDF document text
- https://digireg.nz/upload/vilus.pdfIn PDF document text
- http://elcivan.com/admin/UserFiles/file/8245068495.pdfIn PDF document text
- http://phatnang.com/media/ftp/file/kijote.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_off0000c1dc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC1DC | 10968 bytes |
SHA-256: a9a55ac1960f63678cb43b4f3475eb5f7689a7331cc6f2e921c3210737b0d61e |
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font_01_sfnt_off0000db3d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB3D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f34f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF34F | 19880 bytes |
SHA-256: a0b47bad6fe3bc214d742ee71a2e74861e6b72732ff173e8177b602d3e525834 |
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