MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to potentially compromised or disposable hosting sites. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this, suggesting the PDF is designed to lure users to malicious destinations.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://archism.ru/uplcv?utm_term=lehninger+pdf+biochemistry PDF link annotation
- http://registermycompany.in/admin/userfiles/file/dujux.pdfIn PDF document text
- https://savitravel.ro/ckfinder/userfiles/files/zupok.pdfIn PDF document text
- https://rawoctane.com/uploads/file/jonojojopiwiso.pdfIn PDF document text
- http://stainless-faucet.com/uploads/htmlupload/files/12660075818.pdfIn PDF document text
- http://gz-theoutfit.com/UploadFiles/FCKeditor/20210903115810.pdfIn PDF document text
- https://ap-qatar.com/userfiles/files/jenekupizu.pdfIn PDF document text
- http://www.primariasantana.ro/uploads/file/53518445419.pdfIn PDF document text
- http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16133b7939e619---28145785344.pdfIn PDF document text
- http://www.sandipmallick.com/fckimages/file/dimaruvelamepilubenapaf.pdfIn PDF document text
- https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/tilp0e691foecpkffcsn23kbmh/94286235616.pdfIn PDF document text
- http://fine-cottage.ru/userfiles/file/67394405998.pdfIn PDF document text
- https://likeevent.it/writable/public/userfiles/file/sufaxowenapa.pdfIn PDF document text
- http://abacusnancy.com/userfiles/file/xerizazezovutuvefopipo.pdfIn PDF document text
- https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/004083638779b3533d0c03218048f4c2/nameditetufodamuj.pdfIn PDF document text
- http://ideviceplus.nl/app/webroot/files/userfiles/files/metekaxoxivol.pdfIn PDF document text
- http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/1613853d54025c---10621562845.pdfIn PDF document text
- https://nationalshield-uae.com/userfiles/files/6312019418.pdfIn PDF document text
- http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133271eb8bf2---lobuwodutiti.pdfIn PDF document text
- http://fipjp.com/userfiles/file/puxegesu.pdfIn PDF document text
- http://lollanaclinic.com/image/upload/File/16885083708.pdfIn PDF document text
- https://rendszergazda-cegeknek.hu/ckfinder/userfiles/files/kapotafekaruvagetifivunuf.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_off0000d96f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD96F | 18700 bytes |
SHA-256: 90a0c34a1781b3e4dfaaf10d2263365e9e044aa5eb8e0839b34e88d6880a5f65 |
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font_01_sfnt_off000109bc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109BC | 11068 bytes |
SHA-256: 23ab50598111150d46dd7e34936c1473d42dba66ea52af8197331c65c7843a5c |
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font_02_sfnt_off000122e5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x122E5 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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