MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with numerous external URLs pointing to potentially compromised or disposable hosting sites. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure suggests it is designed to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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 http://feynburg-uhren.de/uploads/92227174513.pdf In PDF document text
- http://polymer-optix.de/userfiles/file/kotaropupusubomuku.pdfIn PDF document text
- http://mjacz.cz/soubory/files/dakizarofuk.pdfIn PDF document text
- http://dagmar-e.de/userfiles/file/gokizopa.pdfIn PDF document text
- https://swaarm.de/app/webroot/upload/files/zomimerexetitikewe.pdfIn PDF document text
- http://sov.tranovice.org/webpagebuilder/ckfinder/userfiles/files/febaradudajedabe.pdfIn PDF document text
- https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/161358e54d5b37---wunavoxodejuvabugutagol.pdfIn PDF document text
- https://yarpaket.ru/userfiles/file/62134313245.pdfIn PDF document text
- https://espritgt.com/userfiles/file/naxusejesizekig.pdfIn PDF document text
- https://musikkursus.dk/userfiles/file/73933875026.pdfIn PDF document text
- http://yjccnc.com/upload/files/46234557152.pdfIn PDF document text
- http://victoryelectricalsupply.com/ckfinder/userfiles/files/48652157267.pdfIn PDF document text
- https://expomediainc.com/upload/file/21501623128.pdfIn PDF document text
- http://strojsteel.cz/webpagebuilder/ckfinder/userfiles/files/pifowopev.pdfIn PDF document text
- http://incomingmakedonia.com/files/files/resanoxasixenegowidavot.pdfIn PDF document text
- http://bikaji.zohukum.com/ckfinder/userfiles/files/kevixidubepaludura.pdfIn PDF document text
- https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/3d9617d971c480e778b69f9b71d973fe/87663950917.pdfIn PDF document text
- https://ijtm.in/userfiles/file/vofepimem.pdfIn PDF document text
- http://gvs-russia.ru/admin/ckfinder/userfiles/files/zemuwulil.pdfIn PDF document text
- http://nationshield.ae/userfiles/files/55400826173.pdfIn PDF document text
- http://gotoippc.com/ckfinder/userfiles/files/69971171842.pdfIn PDF document text
- https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/69hq15r9b86ek50lgom5ufv7f3/9029357682.pdfIn PDF document text
- https://shieldtech.cz/ckfinder/userfiles/files/62196038577.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=top+paid+game+in+play+storePDF 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_off0000eb71.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB71 | 10812 bytes |
SHA-256: badf7d902ba0c6ab810073de9aaa5fc7f9624a7caed3667c2de2bcc1ab808c64 |
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font_01_sfnt_off00010429.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10429 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011c3b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C3B | 18328 bytes |
SHA-256: a4a12e7d1a0653acec9af9b9531fed00c015f8f9f94c20ee8819ceba688085fd |
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