MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple potentially compromised or disposable hosting sites. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of numerous external links strongly suggests an attempt to redirect users to malicious content.
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 http://daglichtfilters.nl/ckfinder/userfiles/files/loduvexonononos.pdf In PDF document text
- http://land89.com/ckupload/files/lozovidoxululokabopor.pdfIn PDF document text
- http://www.haztartasigepszakuzlet.hu/pics/file/benisufinivepefimasota.pdfIn PDF document text
- http://tpfish.com.taipei/archive/upload/files/lomexurasofobazevukix.pdfIn PDF document text
- https://trompis-tondschungel.de/userfiles/file/35495593581.pdfIn PDF document text
- http://nuklearmedizin-amro.de/userfiles/file/labudonobov.pdfIn PDF document text
- http://getwealthythisyear.com/ckfinder/userfiles/files/39946113970.pdfIn PDF document text
- http://ekmeta.lt/failai/file/41374395227.pdfIn PDF document text
- http://terredellamagnagrecia.com/userfiles/files/pukinug.pdfIn PDF document text
- https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/hju0ghfiq9fi5ttebmqhijreuh/6466362847.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137861527d66---2175176905.pdfIn PDF document text
- http://planbmedia.hu/files/81278201434.pdfIn PDF document text
- http://gzcil.com/uploadfile/files/pafotemuzewexininod.pdfIn PDF document text
- http://rebizplus.com/userfiles/file/zogaxixugolo.pdfIn PDF document text
- http://hyosangjo.com/userfiles/file/20210904042128.pdfIn PDF document text
- http://chiangmai-esc.net/user_img/files/xewokalafedomis.pdfIn PDF document text
- http://biblioteka-belzec.pl/upload/files/maxividetusojajuvibi.pdfIn PDF document text
- http://ccsup.co.th/uploads/ckfinder/files/dufutilimekax.pdfIn PDF document text
- https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/qi6vlc46g2fikmltd6lo8k10i1/bifor.pdfIn PDF document text
- http://daiichihr.com/uploads/news_file/93134678000.pdfIn PDF document text
- http://biomehl.com/images/content/files/25443129612.pdfIn PDF document text
- http://daiichilogistics.com/uploads/news_file/xepusubasarol.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=all+comics+pdfPDF 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_off0000ee79.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE79 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00010690.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10690 | 10168 bytes |
SHA-256: 861f7d26f6813511add92f0f890e6ec2864fb564e614660ee662a63a70be8a4c |
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font_02_sfnt_off00011d40.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D40 | 17824 bytes |
SHA-256: 4deb4f78976cf42e438063b7d8d207baa489d7549eb1a6112e8f0bc5f9b3caa3 |
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