MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs that form a link farm, with several pointing to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution scheme. The presence of external URI heuristics further supports the attack pattern of directing users to potentially harmful 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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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://huntic.ru/uplcv?utm_term=size+order+of+planets+from+smallest+to+biggest PDF link annotation
- http://filtrydokoparek.pl/img/all/pijoribupukorujubejulu.pdfIn PDF document text
- https://g4m3s-4p1-12s1.com/contents/files/ludesase.pdfIn PDF document text
- https://okna-kursk.ru/page_edit/_samples/userfiles/files/98511574000.pdfIn PDF document text
- http://markasib.ru/ckfinder/userfiles/files/pinajiluxejezup.pdfIn PDF document text
- http://bertrandetgastineaudesigners.com/userfiles/file/16574815317.pdfIn PDF document text
- http://exima.kr/userData/board/file/65709161350.pdfIn PDF document text
- https://hiddencliff.kr/FileData/ckfinder/files/20210917_424D6DABABEA9BC2.pdfIn PDF document text
- https://8cj2aja7-8mxb.com/contents/files/dekawija.pdfIn PDF document text
- http://taeguektour.com/FileData/ckfinder/files/20210903_6C09183F7AE9EE43.pdfIn PDF document text
- http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16140e7eeb179a---diretomajonugopase.pdfIn PDF document text
- http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613e52160580a---54350860803.pdfIn PDF document text
- http://anais.terminarz.online/kosmetyczka/krakow/files/4497603348.pdfIn PDF document text
- https://kindeeyudee.com/ck_files/files/fogokaju.pdfIn PDF document text
- http://pm-ural.com/uploads/files/16306037728.pdfIn PDF document text
- http://rainternacional.com/userfiles/file/97240729597.pdfIn PDF document text
- http://sumosushingrill.com/uploads/files/gimupasuxaresejovunotum.pdfIn PDF document text
- https://lecachet.fr/docs/files/kuvimovejexozojezuwepa.pdfIn PDF document text
- https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1613de1618236c---14198198586.pdfIn PDF document text
- http://mimarathi.live/assets/ckfinder/core/connector/php/uploads/files/56408754371.pdfIn PDF document text
- http://zsdbiopharm.com/upload/files/sizoxavofuwulorovoxo.pdfIn PDF document text
- http://ceroki.com/image/files/taxake.pdfIn PDF document text
- https://shreenathtechnologies.com/userfiles/file/fijegoleza.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_off0000e8f2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8F2 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00010104.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10104 | 17948 bytes |
SHA-256: 40de2fed251bcc1d700829bfe9b6bbc16dcb273f5f242737c3fb4ac025b54963 |
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font_02_sfnt_off00012f67.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12F67 | 11116 bytes |
SHA-256: 906f0766f5e07cb4659f8a441103f4f921b57924d58e2cb2625592c9f982e031 |
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