MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to compromised CMS upload storage or disposable hosting, suggesting a link farm designed to redirect users. The presence of these links and the overall structure strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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://irlanc.ru/uplcv?utm_term=ket+practice+test+2020+pdf PDF link annotation
- http://szhlfz.net/upload/1315999774.pdfIn PDF document text
- http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1613120696cea5---kulotasibaw.pdfIn PDF document text
- http://alsace.annuaire-regional.com/ckfinder/userfiles/files/99213873681.pdfIn PDF document text
- https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/161490195d6b65---876094707.pdfIn PDF document text
- http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132908536469---20172315077.pdfIn PDF document text
- http://thicongdiennuocmiennam.com/uploads/files/60386694897.pdfIn PDF document text
- http://nitecoreromania.ro/files/file/60133229635.pdfIn PDF document text
- https://fobh.net/userfiles/files/95594834056.pdfIn PDF document text
- http://hzbmsj.net/images/upload/File/98618490508.pdfIn PDF document text
- https://insp.biz/img/file/79646409701.pdfIn PDF document text
- https://perfecthospitals.com/FCKeditor/file/83281418834.pdfIn PDF document text
- https://www.thaiahpa.com/flash/files/buvirijovokorovane.pdfIn PDF document text
- http://reversetheclocknow.com/ckfinder/userfiles/files/27026445542.pdfIn PDF document text
- http://audidalys.lt/ckfinder/userfiles/files/betitolujevase.pdfIn PDF document text
- http://leaguengn.com/userfiles/file///jesuneboboganafatijima.pdfIn PDF document text
- https://www.studioline.ie/ckfinder/userfiles/files/22906433018.pdfIn PDF document text
- http://svsteinfurth.de/radsportfiles/file/kemebisutun.pdfIn PDF document text
- https://dudikom.pl/userfiles/file/5457993393.pdfIn PDF document text
- https://peusch.lu/userfiles/files/novabusimigozi.pdfIn PDF document text
- http://lexen.ca/userfiles/files/69252583753.pdfIn PDF document text
- http://itaxabc.com/userfiles/file/20210905070745_1403317433.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_off0000c07e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC07E | 10576 bytes |
SHA-256: 09572ba38fbf6ee44fc2f7bffa0479074e6ec6e0a11924dc346762e9fc6c3cd1 |
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font_01_sfnt_off0000d8d5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8D5 | 17456 bytes |
SHA-256: ec6b34f07f5402127dbb2f65a73cd8ece0709bbb6e6dba078e99cb822562b4e7 |
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font_02_sfnt_off00010623.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10623 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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