MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection for phishing and trojan activity. It contains numerous embedded URLs pointing to external sites, some of which are identified as part of a link farm on disposable hosting. The document body, though heavily obfuscated, suggests it was generated by wkhtmltopdf, a tool often used to create PDFs from web content, further supporting the idea that the document's primary purpose is to redirect users to potentially malicious external resources.
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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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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QR-code redirect lure medium SE_QR_LUREDocument instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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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://wastran.ru/uplcv?utm_term=old+phone+to+new+phone+data+transfer+app PDF link annotation
- https://ceramicasvillaflor.cl/UserFiles/File/53811150055.pdfIn PDF document text
- https://maychieuvinh.vn/upload/files/40505795358.pdfIn PDF document text
- https://santa.sg/images/users/00000000/files/79658328418.pdfIn PDF document text
- http://skalamatbaa.com/userfiles/file/xuzukamanigepofija.pdfIn PDF document text
- http://blossomtour.net/FileData/ckfinder/files/20210916_C7424B7545D67246.pdfIn PDF document text
- https://luatsuavina.com/userfiles/file/46114945809.pdfIn PDF document text
- https://atamergranit.com/userfiles/file/lunozuranoxuwaw.pdfIn PDF document text
- http://galerie45.com/userfiles/file/tomajizozuxed.pdfIn PDF document text
- https://www.vignolaweb.it/ckfinder/userfiles/files/kaxupezate.pdfIn PDF document text
- https://krygina40.ru/UserFiles/File/pagakisojigan.pdfIn PDF document text
- http://thekitchendesignstudio.org/uploads/files/zakepox.pdfIn PDF document text
- https://epagneuls-bretons.fr/caningest/images/file/92782552171.pdfIn PDF document text
- http://clerus.hu/files/file/texuvotitijaf.pdfIn PDF document text
- http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16141d0189c7eb---fevuraromenivubikexet.pdfIn PDF document text
- http://savvyais.com/userfiles/file/14573178070.pdfIn PDF document text
- http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16147a0b30fd06---wafafetiduperava.pdfIn PDF document text
- http://songpinhao.com/userfiles/files/51002572194.pdfIn PDF document text
- http://gocoachfox.com/userfiles/file/39448542928.pdfIn PDF document text
- https://korankertas.com/contents/files/46869482139.pdfIn PDF document text
- http://omonetach.pl/foto/ilustracje/file/disajolifirupin.pdfIn PDF document text
- http://3asoft.vn/img/files/tirulozusesatidorejonadek.pdfIn PDF document text
- http://webinaris.training/ckfinder/userfiles/publics/files/devakonoba.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_off0000e8f8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8F8 | 10616 bytes |
SHA-256: 6e0a317d8dd020c61ed11e3ed1a2c4dd08e41d6f32872a4faf52695c0a0952cc |
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font_01_sfnt_off00010149.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10149 | 17504 bytes |
SHA-256: 908cc5ada58cf14b46a10d7793bb3c54db8cc9878c4ebaba935cf62403b7d517 |
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font_02_sfnt_off00012eba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12EBA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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