MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs pointing to compromised WordPress sites and disposable domains, indicative of a link farm used for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure and URL analysis point to a malicious link farm.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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://inwebjor.ru/uplcv?utm_term=how+to+make+variable+description+table+in+java PDF link annotation
- http://lightofislamonair.org/uploads/files/52462846958.pdfIn PDF document text
- http://jfac.kr/ckfinder/userfiles/files/bipesefa.pdfIn PDF document text
- https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130dcfe4ee2b---39683661937.pdfIn PDF document text
- http://hillsdalehorseboarding.com/ckfinder/userfiles/files/lakevupek.pdfIn PDF document text
- http://clinicaveterinariailmarzocco.it/userfiles/files/20214794752.pdfIn PDF document text
- http://sameiroeventos.pt/ficheiros/55682624325.pdfIn PDF document text
- http://fotografieindex.nl/images/uploads/71715782522.pdfIn PDF document text
- http://www.coverseg.com/uploads/ckfinder/files/netarizifokefazilibe.pdfIn PDF document text
- http://birkhoffhi.com/userfiles/files/41708318561.pdfIn PDF document text
- http://feuerwehrobrigheim.de/upload/files/fopor.pdfIn PDF document text
- http://liveranigioielli.it/userfiles/files/2835359550.pdfIn PDF document text
- http://epmachine.ru/d/files/bexul.pdfIn PDF document text
- https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/a9fbc4f9489f7ce243ff6697a2702ca3/5448659560.pdfIn PDF document text
- http://aotmoo.com/uploadfile/files/20210923_180800.pdfIn PDF document text
- http://apicn.net/upload/files/43398953043.pdfIn PDF document text
- http://cascad-trans.ru/files/80746549767.pdfIn PDF document text
- http://dh-life.com/ckfinder/userfiles/files/51690614362.pdfIn PDF document text
- http://syarmarka.ru/userfiles/files/36694599502.pdfIn PDF document text
- https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/bspqhd1bq4jeqmjfhdcbi3ejf2/52590143488.pdfIn PDF document text
- https://ladangmimpi2.com/contents/files/xatinobuj.pdfIn PDF document text
- http://prestopc.it/upload/file/pogometibad.pdfIn PDF document text
- http://jlm-kg.com/uploads/file/53689051798.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_off0000b308.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB308 | 16036 bytes |
SHA-256: 5516c72922e249f98439214a36982a5529cbe2cdde2d8c72f22f287047bebfc2 |
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font_01_sfnt_off0000dc26.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC26 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f43d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF43D | 11180 bytes |
SHA-256: dc4532474cf9f33287a64b48f23ba3e056a2caff7f1d1d3f2f005cf1cd7cc4e9 |
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